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Functions
struct line_pnts *	Vect_new_line_struct (void)
	Creates and initializes a line_pnts structure. More...

int	Vect_append_point (struct line_pnts *, double, double, double)
	Appends one point to the end of a line. More...

int	Vect_append_points (struct line_pnts , const struct line_pnts , int)
	Appends points to the end of a line. More...

int	Vect_line_insert_point (struct line_pnts *, int, double, double, double)
	Insert new point at index position and move all old points at that position and above up. More...

int	Vect_line_delete_point (struct line_pnts *, int)
	Delete point at given index and move all points above down. More...

int	Vect_line_get_point (const struct line_pnts , int, double , double , double )
	Get line point of given index. More...

int	Vect_get_num_line_points (const struct line_pnts *)
	Get number of line points. More...

int	Vect_line_prune (struct line_pnts *)
	Remove duplicate points, i.e. zero length segments. More...

int	Vect_line_prune_thresh (struct line_pnts *, double)
	Remove points in threshold. More...

void	Vect_line_reverse (struct line_pnts *)
	Reverse the order of vertices. More...

int	Vect_copy_xyz_to_pnts (struct line_pnts , const double , const double , const double , int)
	Copy points from array to line_pnts structure. More...

int	Vect_copy_pnts_to_xyz (const struct line_pnts , double , double , double , int *)
	Copy points from line structure to array. More...

void	Vect_reset_line (struct line_pnts *)
	Reset line. More...

void	Vect_destroy_line_struct (struct line_pnts *)
	Frees all memory associated with a line_pnts structure, including the structure itself. More...

int	Vect_point_on_line (const struct line_pnts , double, double , double , double , double , double )
	Find point on line in the specified distance. More...

int	Vect_line_segment (const struct line_pnts , double, double, struct line_pnts )
	Create line segment. More...

double	Vect_line_length (const struct line_pnts *)
	Calculate line length, 3D-length in case of 3D vector line. More...

double	Vect_line_geodesic_length (const struct line_pnts *)
	Calculate line length. More...

int	Vect_line_distance (const struct line_pnts , double, double, double, int, double , double , double , double , double , double *)
	Calculate distance of point to line. More...

int	Vect_line_geodesic_distance (const struct line_pnts , double, double, double, int, double , double , double , double , double , double *)
	Calculate geodesic distance of point to line in meters. More...

void	Vect_line_box (const struct line_pnts , struct bound_box )
	Get bounding box of line. More...

void	Vect_line_parallel (struct line_pnts , double, double, int, struct line_pnts )
	Create parallel line. More...

void	Vect_line_parallel2 (struct line_pnts , double, double, double, int, int, double, struct line_pnts )

void	Vect_line_buffer (const struct line_pnts , double, double, struct line_pnts )
	Create buffer around the line line. More...

void	Vect_line_buffer2 (const struct line_pnts , double, double, double, int, int, double, struct line_pnts , struct line_pnts *, int )
	Creates buffer around line. More...

void	Vect_area_buffer2 (struct Map_info , int, double, double, double, int, int, double, struct line_pnts , struct line_pnts *, int )
	Creates buffer around area. More...

void	Vect_point_buffer2 (double, double, double, double, double, int, double, struct line_pnts **)
	Creates buffer around the point (px, py). More...

struct line_cats *	Vect_new_cats_struct (void)
	Creates and initializes line_cats structure. More...

int	Vect_cat_set (struct line_cats *, int, int)
	Add new field/cat to category structure if doesn't exist yet. More...

int	Vect_cat_get (const struct line_cats , int, int )
	Get first found category of given field. More...

int	Vect_cat_del (struct line_cats *, int)
	Delete all categories of given layer. More...

int	Vect_field_cat_del (struct line_cats *, int, int)
	Delete field/cat from line_cats structure. More...

int	Vect_field_cat_get (const struct line_cats , int, struct ilist )
	Get list of categories of given field. More...

int	Vect_cat_in_array (int, const int *, int)
	Check if category is in ordered array of integers. More...

int	Vect_reset_cats (struct line_cats *)
	Reset category structure to make sure cats structure is clean to be re-used. More...

void	Vect_destroy_cats_struct (struct line_cats *)
	Frees all memory associated with line_cats structure, including the struct itself. More...

int	Vect_get_area_cats (struct Map_info , int, struct line_cats )
	Get area categories. More...

int	Vect_get_area_cat (struct Map_info *, int, int)
	Find FIRST category of given field and area. More...

int	Vect_get_line_cat (struct Map_info *, int, int)
	Fetches FIRST category number for given vector line and field. More...

struct cat_list *	Vect_cats_set_constraint (struct Map_info , int, char , char *)
	Set category constraints using 'where' or 'cats' option and layer number. More...

int	Vect_cats_in_constraint (struct line_cats , int, struct cat_list )
	Check if categories match with category constraints. More...

struct cat_list *	Vect_new_cat_list (void)
	Allocate memory for cat_list structure. More...

int	Vect_str_to_cat_list (const char , struct cat_list )
	Converts string of categories and cat ranges separated by commas to cat_list. More...

int	Vect_array_to_cat_list (const int , int, struct cat_list )
	Convert ordered array of integers to cat_list structure. More...

int	Vect_cat_list_to_array (const struct cat_list , int , int )
	Convert cat_list struct to ordered array of unique integers. More...

int	Vect_cat_in_cat_list (int, const struct cat_list *)
	Check if category number is in list. More...

void	Vect_destroy_cat_list (struct cat_list *)
	Frees allocated cat_list memory. More...

struct varray *	Vect_new_varray (int)
	Create new struct varray and allocate space for given number of items. More...

int	Vect_set_varray_from_cat_string (struct Map_info , int, const char , int, int, struct varray *)
	Set values in 'varray' to 'value' from category string. More...

int	Vect_set_varray_from_cat_list (struct Map_info , int, struct cat_list , int, int, struct varray *)
	Set values in 'varray' to 'value' from category list. More...

int	Vect_set_varray_from_db (struct Map_info , int, const char , int, int, struct varray *)
	Set values in 'varray' to 'value' from DB (where statement) More...

struct dblinks *	Vect_new_dblinks_struct (void)
	Create and init new dblinks structure. More...

void	Vect_reset_dblinks (struct dblinks *)
	Reset dblinks structure (number of fields) More...

int	Vect_add_dblink (struct dblinks , int, const char , const char , const char , const char , const char )
	Add new DB connection to dblinks structure. More...

int	Vect_check_dblink (const struct dblinks , int, const char )
	Check if DB connection exists in dblinks structure. More...

int	Vect_map_add_dblink (struct Map_info , int, const char , const char , const char , const char , const char )
	Add new db connection to Map_info structure. More...

int	Vect_map_del_dblink (struct Map_info *, int)
	Delete db connection from Map_info structure. More...

void	Vect_copy_map_dblinks (struct Map_info , struct Map_info , int)
	Copy DB links from input vector map to output vector map. More...

int	Vect_map_check_dblink (struct Map_info , int, const char )
	Check if DB connection exists in dblinks structure. More...

int	Vect_read_dblinks (struct Map_info *)
	Read dblinks to existing structure. More...

int	Vect_write_dblinks (struct Map_info *)
	Write dblinks to file. More...

struct field_info *	Vect_default_field_info (struct Map_info , int, const char , int)
	Get default information about link to database for new dblink. More...

struct field_info *	Vect_get_dblink (struct Map_info *, int)
	Get information about link to database. More...

struct field_info *	Vect_get_field (struct Map_info *, int)
	Get information about link to database (by layer number) More...

struct field_info *	Vect_get_field_by_name (struct Map_info , const char )
	Get information about link to database (by layer name) More...

struct field_info *	Vect_get_field2 (struct Map_info , const char )
	Get information about link to database (by layer number or layer name) More...

int	Vect_get_field_number (struct Map_info , const char )
	Get field number of given field. More...

void	Vect_set_db_updated (struct Map_info *)
	Rewrite 'dbln' file. More...

const char *	Vect_get_column_names (struct Map_info *, int)
	Fetches list of DB column names of vector map attribute table. More...

const char *	Vect_get_column_types (struct Map_info *, int)
	Fetches list of DB column types of vector map attribute table. More...

const char *	Vect_get_column_names_types (struct Map_info *, int)
	Fetches list of DB column names and types of vector map attribute table. More...

void	Vect_destroy_field_info (struct field_info *)
	Free a struct field_info and all memory associated with it. More...

struct ilist *	Vect_new_list (void)
	Creates and initializes a struct ilist. More...

int	Vect_list_append (struct ilist *, int)
	Append new item to the end of list if not yet present. More...

int	Vect_list_append_list (struct ilist , const struct ilist )
	Append new items to the end of list if not yet present. More...

int	Vect_list_delete (struct ilist *, int)
	Remove a given value (item) from list. More...

int	Vect_list_delete_list (struct ilist , const struct ilist )
	Delete list from existing list. More...

int	Vect_val_in_list (const struct ilist *, int)
	Find a given item in the list. More...

int	Vect_reset_list (struct ilist *)
	Reset ilist structure. More...

void	Vect_destroy_list (struct ilist *)
	Frees all memory associated with a struct ilist, including the struct itself. More...

struct boxlist *	Vect_new_boxlist (int)
	Creates and initializes a struct boxlist. More...

int	Vect_boxlist_append (struct boxlist , int, const struct bound_box )
	Append new item to the end of list if not yet present. More...

int	Vect_boxlist_append_boxlist (struct boxlist , const struct boxlist )
	Append new items to the end of list if not yet present. More...

int	Vect_boxlist_delete (struct boxlist *, int)
	Remove a given value (item) from list. More...

int	Vect_boxlist_delete_boxlist (struct boxlist , const struct boxlist )
	Delete list from existing list. More...

int	Vect_val_in_boxlist (const struct boxlist *, int)
	Find a given item in the list. More...

int	Vect_reset_boxlist (struct boxlist *)
	Reset boxlist structure. More...

void	Vect_destroy_boxlist (struct boxlist *)
	Frees all memory associated with a struct boxlist, including the struct itself. More...

int	Vect_point_in_box (double, double, double, const struct bound_box *)
	Tests if point is in 3D box. More...

int	Vect_point_in_box_2d (double, double, const struct bound_box *)
	Tests if point is in 2D box. More...

int	Vect_box_overlap (const struct bound_box , const struct bound_box )
	Tests for overlap of two boxes. More...

int	Vect_box_copy (struct bound_box , const struct bound_box )
	Copy box B to box A. More...

int	Vect_box_extend (struct bound_box , const struct bound_box )
	Extend box A by box B. More...

int	Vect_box_clip (double , double , double , double , const struct bound_box *)
	Clip coordinates to box, if necessary, lines extending outside of a box. More...

int	Vect_region_box (const struct Cell_head , struct bound_box )
	Copy region window to bounding box. More...

int	Vect_cidx_get_num_fields (struct Map_info *)
	Get number of layers in category index. More...

int	Vect_cidx_get_field_number (struct Map_info *, int)
	Get layer number for given index. More...

int	Vect_cidx_get_field_index (struct Map_info *, int)
	Get layer index for given layer number. More...

int	Vect_cidx_get_num_unique_cats_by_index (struct Map_info *, int)
	Get number of unique categories for given layer index. More...

int	Vect_cidx_get_num_cats_by_index (struct Map_info *, int)
	Get number of categories for given layer index. More...

int	Vect_cidx_get_num_types_by_index (struct Map_info *, int)
	Get number of feature types for given layer index. More...

int	Vect_cidx_get_type_count_by_index (struct Map_info , int, int, int , int *)
	Get count of feature types for given field and type index. More...

int	Vect_cidx_get_type_count (struct Map_info *, int, int)
	Get count of features of certain type by layer and type. More...

int	Vect_cidx_get_cat_by_index (struct Map_info , int, int, int , int , int )
	Get category, feature type and id for given layer and category index. More...

int	Vect_cidx_get_unique_cats_by_index (struct Map_info , int, struct ilist )
	Get list of unique categories for given layer index. More...

int	Vect_cidx_find_next (struct Map_info , int, int, int, int, int , int *)
	Find next line/area id for given category, start_index and type_mask. More...

void	Vect_cidx_find_all (struct Map_info , int, int, int, struct ilist )
	Find all line/area id's for given category. More...

int	Vect_cidx_dump (struct Map_info , FILE )
	Write (dump) category index in text form to file. More...

int	Vect_cidx_save (struct Map_info *)
	Save category index to binary file (cidx) More...

int	Vect_cidx_open (struct Map_info *, int)
	Read category index from cidx file if exists. More...

struct Map_info *	Vect_new_map_struct (void)
	Creates and initializes Map_info structure. More...

void	Vect_destroy_map_struct (struct Map_info *)
	Frees all memory associated with a Map_info structure, including the structure itself. More...

int	Vect_read_header (struct Map_info *)
	Read vector map header from map head file. More...

int	Vect_write_header (struct Map_info *)
	Write vector map header to map head file. More...

const char *	Vect_get_name (struct Map_info *)
	Get name of vector map. More...

const char *	Vect_get_mapset (struct Map_info *)
	Get name of mapset where vector map lives. More...

const char *	Vect_get_full_name (struct Map_info *)
	Get fully qualified name of vector map. More...

const char *	Vect_get_finfo_dsn_name (struct Map_info *)
	Get datasource name (relevant only for non-native formats) More...

char *	Vect_get_finfo_layer_name (struct Map_info *)
	Get layer name (relevant only for non-native formats) More...

const char *	Vect_get_finfo_format_info (struct Map_info *)
	Get format info as string (relevant only for non-native formats) More...

const char *	Vect_get_finfo_geometry_type (struct Map_info *)
	Get geometry type as string (relevant only for non-native formats) More...

const struct Format_info *	Vect_get_finfo (struct Map_info *)
	Get header info for non-native formats. More...

int	Vect_get_finfo_topology_info (struct Map_info , char , char , int )
	Get topology type (relevant only for non-native formats) More...

int	Vect_is_3d (struct Map_info *)
	Check if vector map is 3D. More...

int	Vect_set_organization (struct Map_info , const char )
	Set organization string in map header. More...

const char *	Vect_get_organization (struct Map_info *)
	Get organization string from map header. More...

int	Vect_set_date (struct Map_info , const char )
	Set date of digitization in map header. More...

const char *	Vect_get_date (struct Map_info *)
	Get date of digitization from map header. More...

int	Vect_set_person (struct Map_info , const char )
	Set name of user who digitized the map in map header. More...

const char *	Vect_get_person (struct Map_info *)
	Get user name string who digitized the map from map header. More...

int	Vect_set_map_name (struct Map_info , const char )
	Set map name in map header. More...

const char *	Vect_get_map_name (struct Map_info *)
	Get map name from map header. More...

int	Vect_set_map_date (struct Map_info , const char )
	Set date when the source map was originally produced in map header. More...

const char *	Vect_get_map_date (struct Map_info *)
	Get date when the source map was originally produced from map header. More...

int	Vect_set_comment (struct Map_info , const char )
	Set comment or other info string in map header. More...

const char *	Vect_get_comment (struct Map_info *)
	Get comment or other info string from map header. More...

int	Vect_set_scale (struct Map_info *, int)
	Set map scale in map header. More...

int	Vect_get_scale (struct Map_info *)
	Get map scale from map header. More...

int	Vect_set_zone (struct Map_info *, int)
	Set projection zone in map header. More...

int	Vect_get_zone (struct Map_info *)

int	Vect_get_proj (struct Map_info *)
	Get projection from map header. More...

int	Vect_set_proj (struct Map_info *, int)
	Set projection in map header. More...

const char *	Vect_get_proj_name (struct Map_info *)
	Query cartographic projection name of pointer to Map_info structure. More...

int	Vect_set_thresh (struct Map_info *, double)
	Set threshold used for digitization in map header. More...

double	Vect_get_thresh (struct Map_info *)
	Get threshold used for digitization from map header. More...

int	Vect_get_constraint_box (struct Map_info , struct bound_box )
	Get constraint box. More...

int	Vect_level (struct Map_info *)
	Returns level that Map is opened at. More...

int	Vect_get_map_box1 (struct Map_info , struct bound_box )
	Get bounding box of map on level 1 (all features in the map) More...

int	Vect_get_line_type (struct Map_info *, int)
	Get line type. More...

plus_t	Vect_get_num_nodes (struct Map_info *)
	Get number of nodes in vector map. More...

plus_t	Vect_get_num_primitives (struct Map_info *, int)
	Get number of primitives in vector map. More...

plus_t	Vect_get_num_lines (struct Map_info *)
	Fetch number of features (points, lines, boundaries, centroids) in vector map. More...

plus_t	Vect_get_num_areas (struct Map_info *)
	Get number of areas in vector map. More...

plus_t	Vect_get_num_faces (struct Map_info *)
	Get number of faces in vector map. More...

plus_t	Vect_get_num_kernels (struct Map_info *)
	Fetch number of kernels in vector map. More...

plus_t	Vect_get_num_volumes (struct Map_info *)
	Fetch number of volumes in vector map. More...

plus_t	Vect_get_num_islands (struct Map_info *)
	Get number of islands in vector map. More...

plus_t	Vect_get_num_holes (struct Map_info *)
	Fetch number of holes in vector map. More...

int	Vect_get_line_box (struct Map_info , int, struct bound_box )
	Get bounding box of given feature. More...

int	Vect_get_area_box (struct Map_info , int, struct bound_box )
	Get bounding box of area. More...

int	Vect_get_isle_box (struct Map_info , int, struct bound_box )
	Get bounding box of isle. More...

int	Vect_get_map_box (struct Map_info , struct bound_box )
	Get bounding box of map (all features in the map) More...

int	V__map_overlap (struct Map_info *, double, double, double, double)

void	Vect_set_release_support (struct Map_info *)
	Set spatial index to be released when vector is closed. More...

void	Vect_set_category_index_update (struct Map_info *)
	Set category index to be updated when vector is changed. More...

int	Vect_check_input_output_name (const char , const char , int)
	Check for input and output vector map name. More...

int	Vect_legal_filename (const char *)
	Check if output is legal vector name. More...

int	Vect_set_open_level (int)
	Predetermine level at which a vector map will be opened for reading. More...

int	Vect_open_old (struct Map_info , const char , const char *)
	Open existing vector map for reading. More...

int	Vect_open_tmp_old (struct Map_info , const char , const char *)
	Open existing temporary vector map for reading. More...

int	Vect_open_old2 (struct Map_info , const char , const char , const char )
	Open existing vector map for reading. More...

int	Vect_open_old_head (struct Map_info , const char , const char *)
	Reads only info about vector map (headers) More...

int	Vect_open_old_head2 (struct Map_info , const char , const char , const char )
	Reads only info about vector map (headers) More...

int	Vect_open_new (struct Map_info , const char , int)
	Create new vector map for reading/writing. More...

int	Vect_open_tmp_new (struct Map_info , const char , int)
	Create new temporary vector map. More...

int	Vect_open_update (struct Map_info , const char , const char *)
	Open existing vector map for reading/writing. More...

int	Vect_open_tmp_update (struct Map_info , const char , const char *)
	Open existing temporary vector map for reading/writing. More...

int	Vect_open_update2 (struct Map_info , const char , const char , const char )
	Open existing vector map for reading/writing. More...

int	Vect_open_update_head (struct Map_info , const char , const char *)
	Open header file of existing vector map for updating (mostly for database link updates) More...

int	Vect_copy_head_data (struct Map_info , struct Map_info )
	Copy header data from one to another map. More...

int	Vect_build (struct Map_info *)
	Build topology for vector map. More...

int	Vect_topo_check (struct Map_info , struct Map_info )
	Extensive tests for correct topology. More...

int	Vect_get_built (struct Map_info *)
	Return current highest built level (part) More...

int	Vect_build_partial (struct Map_info *, int)
	Build partial topology for vector map. More...

int	Vect_set_constraint_region (struct Map_info *, double, double, double, double, double, double)
	Set constraint region. More...

int	Vect_set_constraint_type (struct Map_info *, int)
	Set constraint type. More...

int	Vect_set_constraint_field (struct Map_info *, int)
	Set constraint field. More...

void	Vect_remove_constraints (struct Map_info *)
	Remove all constraints. More...

int	Vect_rewind (struct Map_info *)
	Rewind vector map to cause reads to start at beginning. More...

int	Vect_close (struct Map_info *)
	Close vector map. More...

void	Vect_set_error_handler_io (struct Map_info , struct Map_info )
	Define standard error handler for input and output vector maps. More...

int	Vect_get_next_line_id (struct Map_info *)
	Get line id for sequential reading. More...

int	Vect_read_next_line (struct Map_info , struct line_pnts , struct line_cats *)
	Read next vector feature. More...

off_t	Vect_write_line (struct Map_info , int, const struct line_pnts , const struct line_cats *)
	Writes a new feature. More...

off_t	Vect_rewrite_line (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)
	Rewrites existing feature (topological level required) More...

int	Vect_delete_line (struct Map_info *, off_t)
	Delete existing feature (topological level required) More...

int	Vect_restore_line (struct Map_info *, off_t, off_t)
	Restore previously deleted feature (topological level required) More...

int	Vect_get_num_dblinks (struct Map_info *)
	Get number of defined dblinks. More...

int	Vect_read_line (struct Map_info , struct line_pnts , struct line_cats *, int)
	Read vector feature (topological level required) More...

int	Vect_line_alive (struct Map_info *, int)
	Check if feature is alive or dead (topological level required) More...

int	Vect_node_alive (struct Map_info *, int)
	Check if node is alive or dead (topological level required) More...

int	Vect_area_alive (struct Map_info *, int)
	Check if area is alive or dead (topological level required) More...

int	Vect_isle_alive (struct Map_info *, int)
	Check if isle is alive or dead (topological level required) More...

int	Vect_get_line_nodes (struct Map_info , int, int , int *)
	Get line nodes. More...

int	Vect_get_line_areas (struct Map_info , int, int , int *)
	Get area id on the left and right side of the boundary. More...

off_t	Vect_get_line_offset (struct Map_info *, int)
	Get feature offset (topological level required) More...

int	Vect_get_node_coor (struct Map_info , int, double , double , double )
	Get node coordinates. More...

int	Vect_get_node_n_lines (struct Map_info *, int)
	Get number of lines for node. More...

int	Vect_get_node_line (struct Map_info *, int, int)
	Get line id for node line index. More...

float	Vect_get_node_line_angle (struct Map_info *, int, int)
	Angle of segment of the line connected to the node. More...

int	Vect_get_area_points (struct Map_info , int, struct line_pnts )
	Returns polygon array of points (outer ring) of given area. More...

int	Vect_get_area_centroid (struct Map_info *, int)
	Returns centroid id for given area. More...

int	Vect_get_area_num_isles (struct Map_info *, int)
	Returns number of isles for given area. More...

int	Vect_get_area_isle (struct Map_info *, int, int)
	Returns isle id for area. More...

double	Vect_get_area_perimeter (struct Map_info *, int)
	Returns perimeter of area with perimeter of isles. More...

double	Vect_get_area_area (struct Map_info *, int)
	Returns area of area without areas of isles. More...

int	Vect_get_area_boundaries (struct Map_info , int, struct ilist )
	Creates list of boundaries for given area. More...

int	Vect_get_isle_points (struct Map_info , int, struct line_pnts )
	Returns polygon array of points for given isle. More...

int	Vect_get_isle_area (struct Map_info *, int)
	Returns area id for isle. More...

int	Vect_get_isle_boundaries (struct Map_info , int, struct ilist )
	Creates list of boundaries for given isle. More...

int	Vect_get_centroid_area (struct Map_info *, int)
	Get area id the centroid is within. More...

int	Vect_get_num_updated_lines (struct Map_info *)
	Get number of updated features. More...

int	Vect_get_updated_line (struct Map_info *, int)
	Get updated line by index. More...

off_t	Vect_get_updated_line_offset (struct Map_info *, int)
	Get updated line offset by index. More...

int	Vect_get_num_updated_nodes (struct Map_info *)
	Get number of updated nodes. More...

int	Vect_get_updated_node (struct Map_info *, int)
	Get updated (modified) node by index. More...

void	Vect_set_updated (struct Map_info *, int)
	Enable/disable maintenance of list of updated lines/nodes. More...

void	Vect_reset_updated (struct Map_info *)
	Reset list of updated lines/nodes. More...

int	Vect_hist_command (struct Map_info *)
	Write command info to history file. More...

int	Vect_hist_write (struct Map_info , const char )
	Write string to history file. More...

int	Vect_hist_copy (struct Map_info , struct Map_info )
	Copy history from one map to another. More...

void	Vect_hist_rewind (struct Map_info *)
	Rewind history file. More...

char *	Vect_hist_read (char , int, struct Map_info )
	Reads one line from history file without newline character. More...

int	Vect_select_lines_by_box (struct Map_info , const struct bound_box , int, struct boxlist *)
	Select lines with bounding boxes by box. More...

int	Vect_select_areas_by_box (struct Map_info , const struct bound_box , struct boxlist *)
	Select areas with bounding boxes by box. More...

int	Vect_select_isles_by_box (struct Map_info , const struct bound_box , struct boxlist *)
	Select isles with bounding boxes by box. More...

int	Vect_select_nodes_by_box (struct Map_info , const struct bound_box , struct ilist *)
	Select nodes by box. More...

int	Vect_find_node (struct Map_info *, double, double, double, double, int)
	Find the nearest node. More...

int	Vect_find_line (struct Map_info *, double, double, double, int, double, int, int)
	Find the nearest line. More...

int	Vect_find_line_list (struct Map_info , double, double, double, int, double, int, const struct ilist , struct ilist *)
	Find the nearest line(s). More...

int	Vect_find_area (struct Map_info *, double, double)
	Find the nearest area. More...

int	Vect_find_island (struct Map_info *, double, double)
	Find the nearest island. More...

int	Vect_select_lines_by_polygon (struct Map_info , struct line_pnts , int, struct line_pnts *, int, struct ilist )
	Select lines by Polygon with optional isles. More...

int	Vect_select_areas_by_polygon (struct Map_info , struct line_pnts , int, struct line_pnts *, struct ilist )
	Select areas by Polygon with optional isles. More...

int	Vect_tin_get_z (struct Map_info , double, double, double , double , double )

int	Vect_find_poly_centroid (const struct line_pnts , double , double *)
	Get centroid of polygon. More...

int	Vect__intersect_line_with_poly (const struct line_pnts , double, struct line_pnts )

int	Vect_get_point_in_area (struct Map_info , int, double , double *)
	Get point inside area and outside all islands. More...

int	Vect_get_point_in_poly (const struct line_pnts , double , double *)
	Get point inside polygon. More...

int	Vect_get_point_in_poly_isl (const struct line_pnts , const struct line_pnts , int, double , double *)
	Get point inside polygon but outside the islands specifiled in IPoints. More...

int	Vect_point_in_area (double, double, struct Map_info , int, struct bound_box )
	Check if point is in area. More...

int	Vect_point_in_area_outer_ring (double, double, struct Map_info , int, struct bound_box )
	Determines if a point (X,Y) is inside an area outer ring. Islands are not considered. More...

int	Vect_point_in_island (double, double, struct Map_info , int, struct bound_box )
	Determines if a point (X,Y) is inside an island. More...

int	Vect_point_in_poly (double, double, const struct line_pnts *)
	Determines if a point (X,Y) is inside a polygon. More...

void	Vect_break_lines (struct Map_info , int, struct Map_info )
	Break lines in vector map at each intersection. More...

int	Vect_break_lines_list (struct Map_info , struct ilist , struct ilist , int, struct Map_info )
	Break selected lines in vector map at each intersection. More...

int	Vect_check_line_breaks (struct Map_info , int, struct Map_info )
	Check for and count intersecting lines, do not break. More...

int	Vect_check_line_breaks_list (struct Map_info , struct ilist , struct ilist , int, struct Map_info )
	Check for and count intersecting lines, do not break. More...

int	Vect_merge_lines (struct Map_info , int, int , struct Map_info *)
	Merge lines or boundaries in vector map. More...

void	Vect_break_polygons (struct Map_info , int, struct Map_info )
	Break polygons in vector map. More...

void	Vect_remove_duplicates (struct Map_info , int, struct Map_info )
	Remove duplicate features from vector map. More...

int	Vect_line_check_duplicate (const struct line_pnts , const struct line_pnts , int)
	Check for duplicate lines. More...

void	Vect_snap_lines (struct Map_info , int, double, struct Map_info )
	Snap lines in vector map to existing vertex in threshold. More...

void	Vect_snap_lines_list (struct Map_info , const struct ilist , double, struct Map_info *)
	Snap selected lines to existing vertex in threshold. More...

int	Vect_snap_line (struct Map_info , struct ilist , struct line_pnts , double, int, int , int *)
	Snap a line to reference lines in Map with threshold. More...

void	Vect_remove_dangles (struct Map_info , int, double, struct Map_info )
	Remove dangles from vector map. More...

void	Vect_chtype_dangles (struct Map_info , double, struct Map_info )
	Change boundary dangles to lines. More...

void	Vect_select_dangles (struct Map_info , int, double, struct ilist )
	Select dangles from vector map. More...

void	Vect_remove_bridges (struct Map_info , struct Map_info , int , int )
	Remove bridges from vector map. More...

void	Vect_chtype_bridges (struct Map_info , struct Map_info , int , int )
	Change type of bridges in vector map. More...

int	Vect_remove_small_areas (struct Map_info , double, struct Map_info , double *)
	Remove small areas from the map map. More...

int	Vect_clean_small_angles_at_nodes (struct Map_info , int, struct Map_info )
	Clean small angles at nodes. More...

int	Vect_overlay_str_to_operator (const char *)
	Get operator code from string. More...

int	Vect_overlay (struct Map_info , int, struct ilist , struct ilist , struct Map_info , int, struct ilist , struct ilist , int, struct Map_info *)
	Overlay 2 vector maps and create new one. More...

int	Vect_overlay_and (struct Map_info , int, struct ilist , struct ilist , struct Map_info , int, struct ilist , struct ilist , struct Map_info *)

void	Vect_graph_init (dglGraph_s *, int)
	Initialize graph structure. More...

void	Vect_graph_build (dglGraph_s *)
	Build network graph. More...

void	Vect_graph_add_edge (dglGraph_s *, int, int, double, int)
	Add edge to graph. More...

void	Vect_graph_set_node_costs (dglGraph_s *, int, double)
	Set node costs. More...

int	Vect_graph_shortest_path (dglGraph_s , int, int, struct ilist , double *)
	Find shortest path. More...

int	Vect_net_build_graph (struct Map_info , int, int, int, const char , const char , const char , int, int)
	Build network graph. More...

int	Vect_net_ttb_build_graph (struct Map_info , int, int, int, int, int, const char , const char , const char , int, int)

int	Vect_net_shortest_path (struct Map_info , int, int, struct ilist , double *)
	Find shortest path. More...

int	Vect_net_ttb_shortest_path (struct Map_info , int, int, int, int, int, struct ilist , double *)
	Find shortest path on network. More...

dglGraph_s *	Vect_net_get_graph (struct Map_info *)
	Get graph structure. More...

int	Vect_net_get_line_cost (struct Map_info , int, int, double )
	Returns in cost for given direction in *cost. More...

int	Vect_net_get_node_cost (struct Map_info , int, double )
	Get cost of node. More...

int	Vect_net_nearest_nodes (struct Map_info , double, double, double, int, double, int , int , int , double , double , struct line_pnts , struct line_pnts , double *)
	Find nearest node(s) on network. More...

int	Vect_net_shortest_path_coor (struct Map_info , double, double, double, double, double, double, double, double, double , struct line_pnts , struct ilist , struct ilist , struct line_pnts , struct line_pnts , double , double *)
	Find shortest path on network between 2 points given by coordinates. More...

int	Vect_net_ttb_shortest_path_coor (struct Map_info , double, double, double, double, double, double, double, double, int, double , struct line_pnts , struct ilist , struct ilist , struct line_pnts , struct line_pnts , double , double *)
	Find shortest path on network with turntable between 2 points given by coordinates. More...

int	Vect_topo_dump (struct Map_info , FILE )
	Dump topology to file. More...

double	Vect_points_distance (double, double, double, double, double, double, int)
	Calculate distance of 2 points. More...

int	Vect_option_to_types (const struct Option *)
	Get types from options. More...

int	Vect_copy_map_lines (struct Map_info , struct Map_info )
	Copy all alive vector features from input vector map to output vector map. More...

int	Vect_copy_map_lines_field (struct Map_info , int, struct Map_info )
	Copy all alive vector features from given layer from input vector map to output vector map. More...

int	Vect_copy (const char , const char , const char *)
	Copy vector map including attribute tables. More...

int	Vect_rename (const char , const char )
	Rename existing vector map (in the current mapset). More...

int	Vect_copy_table (struct Map_info , struct Map_info , int, int, const char *, int)
	Copy attribute table linked to vector map based on type. More...

int	Vect_copy_table_by_cat_list (struct Map_info , struct Map_info , int, int, const char , int, const struct cat_list )
	Copy attribute table linked to vector map based on category list. More...

int	Vect_copy_table_by_cats (struct Map_info , struct Map_info , int, int, const char , int, int , int)
	Copy attribute table linked to vector map based on category numbers. More...

int	Vect_copy_tables (struct Map_info , struct Map_info , int)
	Copy attribute tables linked to vector map. More...

int	Vect_delete (const char *)
	Delete vector map including attribute tables. More...

int	Vect_segment_intersection (double, double, double, double, double, double, double, double, double, double, double, double, double , double , double , double , double , double , int)
	Check for intersect of 2 line segments. More...

int	Vect_line_intersection (struct line_pnts , struct line_pnts , struct bound_box , struct bound_box , struct line_pnts *, struct line_pnts , int , int *, int)

int	Vect_line_intersection2 (struct line_pnts , struct line_pnts , struct bound_box , struct bound_box , struct line_pnts *, struct line_pnts , int , int *, int)
	Intersect 2 lines. More...

int	Vect_line_check_intersection (struct line_pnts , struct line_pnts , int)
	Check if 2 lines intersect. More...

int	Vect_line_check_intersection2 (struct line_pnts , struct line_pnts , int)
	Check if 2 lines intersect. More...

int	Vect_line_get_intersections (struct line_pnts , struct line_pnts , struct line_pnts *, int)
	Get 2 lines intersection points. More...

int	Vect_line_get_intersections2 (struct line_pnts , struct line_pnts , struct line_pnts *, int)
	Get 2 lines intersection points. More...

char *	Vect_subst_var (const char , struct Map_info )
	Substitute variable in string. More...

void	Vect_spatial_index_init (struct spatial_index *, int)
	Initialize spatial index structure. More...

void	Vect_spatial_index_destroy (struct spatial_index *)
	Destroy existing spatial index. More...

void	Vect_spatial_index_add_item (struct spatial_index , int, const struct bound_box )
	Add a new item to spatial index structure. More...

void	Vect_spatial_index_del_item (struct spatial_index , int, const struct bound_box )
	Delete item from spatial index structure. More...

int	Vect_spatial_index_select (const struct spatial_index , const struct bound_box , struct ilist *)
	Select items by bounding box to list. More...

int	Vect_read_ascii (FILE , struct Map_info )
	Read data in GRASS ASCII vector format. More...

int	Vect_read_ascii_head (FILE , struct Map_info )
	Read header of GRASS ASCII vector format. More...

int	Vect_write_ascii (FILE , FILE , struct Map_info , int, int, int, char , int, int, int, const struct cat_list , const char , const char **, int)
	Write data to GRASS ASCII vector format. More...

void	Vect_write_ascii_head (FILE , struct Map_info )
	Write data to GRASS ASCII vector format. More...

SF_FeatureType	Vect_sfa_get_line_type (const struct line_pnts *, int, int)
	Get SF type of given vector feature. More...

int	Vect_sfa_get_type (SF_FeatureType)
	Get relevant GV type. More...

int	Vect_sfa_check_line_type (const struct line_pnts *, int, SF_FeatureType, int)
	Check SF type. More...

int	Vect_sfa_line_dimension (int)
	Get geometry dimension. More...

char *	Vect_sfa_line_geometry_type (const struct line_pnts *, int)
	Get geometry type (string) More...

int	Vect_sfa_line_astext (const struct line_pnts , int, int, int, FILE )
	Export geometry to Well-Known Text. More...

int	Vect_sfa_is_line_simple (const struct line_pnts *, int, int)

int	Vect_sfa_is_line_closed (const struct line_pnts *, int, int)
	Check if feature is closed. More...

int	Vect_sfa_get_num_features (struct Map_info *)
	Get number of simple features. More...

int	Vect_print_header (struct Map_info *)
	Print vector map header to stdout. More...

void	Vect__init_head (struct Map_info *)
	Initialize Map_info head structure (dig_head) More...

int	Vect_coor_info (struct Map_info , struct Coor_info )
	Update Coor_info structure. More...

const char *	Vect_maptype_info (struct Map_info *)
	Gets vector map format (as string) More...

int	Vect_maptype (struct Map_info *)
	Gets vector map format. More...

int	Vect_open_topo (struct Map_info *, int)
	Open topology file ('topo') More...

int	Vect_save_topo (struct Map_info *)
	Save topology file for vector map. More...

int	Vect_open_sidx (struct Map_info *, int)
	Open spatial index file ('sidx') More...

int	Vect_save_sidx (struct Map_info *)
	Save spatial index file for vector map. More...

int	Vect_sidx_dump (struct Map_info , FILE )
	Dump spatial index to file. More...

int	Vect_build_sidx_from_topo (struct Map_info *)
	Create spatial index from topology if necessary (not longer supported) More...

int	Vect_build_sidx (struct Map_info *)
	Create spatial index if necessary. More...

int	Vect_open_fidx (struct Map_info , struct Format_info_offset )
	Open feature index file. More...

int	Vect_save_fidx (struct Map_info , struct Format_info_offset )
	Save feature index file for vector map. More...

int	Vect_fidx_dump (struct Map_info , FILE )
	Dump feature index to file. More...

int	Vect_save_frmt (struct Map_info *)
	Save format definition file for vector map. More...

int	Vect__write_head (struct Map_info *)
	Writes head information to text file (GV_HEAD_ELEMENT) More...

int	Vect__read_head (struct Map_info *)
	Reads head information from text file (GV_HEAD_ELEMENT) - for internal use only. More...

int	V1_open_old_nat (struct Map_info *, int)
	Open existing vector map (level 1) More...

int	V1_open_old_ogr (struct Map_info *, int)
	Open existing OGR layer on non-topological level. More...

int	V1_open_old_pg (struct Map_info *, int)

int	V2_open_old_ogr (struct Map_info *)
	Open existing OGR layer on topological level. More...

int	V2_open_old_pg (struct Map_info *)

int	V1_open_new_nat (struct Map_info , const char , int)
	Create new vector map (level 1) More...

int	V1_open_new_ogr (struct Map_info , const char , int)
	Prepare OGR datasource for creating new OGR layer (level 1) More...

int	V1_open_new_pg (struct Map_info , const char , int)

int	V1_rewind_nat (struct Map_info *)
	Rewind vector map to cause reads to start at beginning on non-topological level (level 1) - native format - internal use only. More...

int	V1_rewind_ogr (struct Map_info *)
	Rewind vector map (OGR layer) to cause reads to start at beginning (level 1) More...

int	V1_rewind_pg (struct Map_info *)
	Rewind vector map (PostGIS layer) to cause reads to start at beginning (level 1) More...

int	V2_rewind_nat (struct Map_info *)
	Rewind vector map to cause reads to start at beginning on topological level (level 2) - native format - internal use only. More...

int	V2_rewind_ogr (struct Map_info *)
	Rewind vector map (OGR layer) to cause reads to start at beginning on topological level (level 2) More...

int	V2_rewind_pg (struct Map_info *)
	Rewind vector map (PostGIS layer) to cause reads to start at beginning on topological level (level 2) More...

int	V1_close_nat (struct Map_info *)
	Close vector map. More...

int	V1_close_ogr (struct Map_info *)
	Close vector map (OGR dsn & layer) on level 1. More...

int	V1_close_pg (struct Map_info *)

int	V2_close_ogr (struct Map_info *)
	Close vector map on topological level (write out fidx file) More...

int	V2_close_pg (struct Map_info *)

int	V1_read_line_nat (struct Map_info , struct line_pnts , struct line_cats *, off_t)
	Read vector feature on non-topological level (level 1) - native format - internal use only. More...

int	V1_read_line_ogr (struct Map_info , struct line_pnts , struct line_cats *, off_t)
	Read feature from OGR layer at given offset (level 1 without topology) More...

int	V1_read_line_pg (struct Map_info , struct line_pnts , struct line_cats *, off_t)

int	V2_read_line_nat (struct Map_info , struct line_pnts , struct line_cats *, int)
	Read vector feature on topological level (level 2) - native format - internal use only. More...

int	V2_read_line_sfa (struct Map_info , struct line_pnts , struct line_cats *, int)
	Reads feature from OGR/PostGIS layer on topological level. More...

int	V2_read_line_pg (struct Map_info , struct line_pnts , struct line_cats *, int)

int	V1_read_next_line_nat (struct Map_info , struct line_pnts , struct line_cats *)
	Read next vector feature on non-topological level (level 1) - native format - internal use only. More...

int	V1_read_next_line_ogr (struct Map_info , struct line_pnts , struct line_cats *)
	Read next feature from OGR layer. Skip empty features (level 1 without topology). More...

int	V1_read_next_line_pg (struct Map_info , struct line_pnts , struct line_cats *)

int	V2_read_next_line_nat (struct Map_info , struct line_pnts , struct line_cats *)
	Read next vector feature on topological level (level 2) - native format - internal use only. More...

int	V2_read_next_line_ogr (struct Map_info , struct line_pnts , struct line_cats *)
	Read next feature from OGR layer on topological level. More...

int	V2_read_next_line_pg (struct Map_info , struct line_pnts , struct line_cats *)

int	V1_delete_line_nat (struct Map_info *, off_t)
	Deletes feature at level 1 (internal use only) More...

int	V1_delete_line_ogr (struct Map_info *, off_t)
	Deletes feature at the given offset on level 1 (OGR interface) More...

int	V1_delete_line_pg (struct Map_info *, off_t)

int	V2_delete_line_nat (struct Map_info *, off_t)
	Deletes feature at topological level (internal use only) More...

int	V2_delete_line_sfa (struct Map_info *, off_t)
	Deletes feature on level 2 (OGR/PostGIS interface) More...

int	V2_delete_line_pg (struct Map_info *, off_t)

int	V1_restore_line_nat (struct Map_info *, off_t, off_t)
	Restores feature at level 1 (internal use only) More...

int	V2_restore_line_nat (struct Map_info *, off_t, off_t)
	Restores feature at topological level (internal use only) More...

off_t	V1_write_line_nat (struct Map_info , int, const struct line_pnts , const struct line_cats *)
	Writes feature to 'coor' file at level 1 (internal use only) More...

off_t	V1_write_line_ogr (struct Map_info , int, const struct line_pnts , const struct line_cats *)
	Writes feature on level 1 (OGR interface) More...

off_t	V1_write_line_pg (struct Map_info , int, const struct line_pnts , const struct line_cats *)

off_t	V2_write_line_nat (struct Map_info , int, const struct line_pnts , const struct line_cats *)
	Writes feature to 'coor' file at topological level (internal use only) More...

off_t	V2_write_line_sfa (struct Map_info , int, const struct line_pnts , const struct line_cats *)
	Writes feature on level 2 (OGR/PostGIS interface, pseudo-topological level) More...

off_t	V2_write_line_pg (struct Map_info , int, const struct line_pnts , const struct line_cats *)

off_t	V1_rewrite_line_nat (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)
	Rewrites feature to 'coor' file at level 1 (internal use only) More...

off_t	V1_rewrite_line_ogr (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)
	Rewrites feature at the given offset on level 1 (OGR interface) More...

off_t	V1_rewrite_line_pg (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)

off_t	V2_rewrite_line_nat (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)
	Rewrites feature to 'coor' file at topological level (internal use only) More...

off_t	V2_rewrite_line_sfa (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)
	Rewrites feature at the given offset on level 2 (OGR/PostGIS interface, pseudo-topological level) More...

off_t	V2_rewrite_line_pg (struct Map_info , off_t, int, const struct line_pnts , const struct line_cats *)

int	Vect_build_nat (struct Map_info *, int)
	Build topology. More...

void	Vect__build_downgrade (struct Map_info *, int)
	Downgrade build level (for internal use only) More...

int	Vect__build_sfa (struct Map_info *, int)
	Build pseudo-topology (for simple features) - internal use only. More...

int	Vect_build_ogr (struct Map_info *, int)
	Build pseudo-topology (simple features) for OGR layer. More...

int	Vect_build_pg (struct Map_info *, int)

int	Vect_build_line_area (struct Map_info *, int, int)
	Build area on given side of line (GV_LEFT or GV_RIGHT) More...

int	Vect_isle_find_area (struct Map_info , int, const struct bound_box )
	Find area outside island. More...

int	Vect_attach_isle (struct Map_info , int, const struct bound_box )
	(Re)Attach isle to area More...

int	Vect_attach_isles (struct Map_info , const struct bound_box )
	(Re)Attach isles in given bounding box to areas More...

int	Vect_attach_centroids (struct Map_info , const struct bound_box )
	(Re)Attach centroids in given bounding box to areas More...

GEOSGeometry *	Vect_read_line_geos (struct Map_info , int, int )
	Read vector feature and stores it as GEOSGeometry instance. More...

GEOSGeometry *	Vect_line_to_geos (const struct line_pnts *, int, int)
	Create GEOSGeometry of given type from feature points. More...

GEOSGeometry *	Vect_read_area_geos (struct Map_info *, int)
	Read vector area and stores it as GEOSGeometry instance (polygon) More...

GEOSCoordSequence *	Vect_get_area_points_geos (struct Map_info *, int)
	Returns the polygon array of points, i.e. outer ring (shell) More...

GEOSCoordSequence *	Vect_get_isle_points_geos (struct Map_info *, int)
	Returns the polygon (isle) array of points (inner ring) More...

char *	Vect_line_to_wkt (const struct line_pnts *, int, int)
	Create a Well Known Text (WKT) representation of given feature type from points. More...

unsigned char *	Vect_line_to_wkb (const struct line_pnts , int, int, size_t )
	Create a Well Known Binary (WKB) representation of given feature type from points. More...

char *	Vect_read_area_to_wkt (struct Map_info *, int)
	Read vector area and return it as Well Known Text (WKT) unsigned char array. More...

unsigned char *	Vect_read_area_to_wkb (struct Map_info , int, size_t )
	Read vector area and return it as Well Known Binary (WKB) unsigned char array. More...

unsigned char *	Vect_read_line_to_wkb (struct Map_info , struct line_pnts , struct line_cats , int, size_t , int *)
	Read a Well Known Binary (WKB) representation of a given feature id. More...

int	Vect_read_colors (const char , const char , struct Colors *)
	Read color table of vector map. More...

int	Vect_remove_colors (const char , const char )
	Remove color table of raster map. More...

void	Vect_write_colors (const char , const char , struct Colors *)
	Write color table for vector map. More...

int	RTreeSearch2 (struct RTree , struct RTree_Rect , struct ilist *)

Function Documentation

◆ RTreeSearch2()

int RTreeSearch2	(	struct RTree *	t,
		struct RTree_Rect *	r,
		struct ilist *	list
	)

Search in an index tree for all data rectangles that overlap the argument rectangle.

Parameters

t	The RTree
r	The argument rectangle
list	The list to store the ids of overlapping rectangles

Returns: the number of qualifying data rects.

Definition at line 40 of file rtree_search.c.

References assert, G_init_ilist(), r, and t.

◆ V1_close_nat()

int V1_close_nat ( struct Map_info * Map )

Close vector map.

Parameters

Map	vector map to be closed

Returns: 0 on success; non-zero on error

Definition at line 34 of file close_nat.c.

References _, dig__write_head(), dig_file_free(), Map_info::dig_fp, gvfile::file, G_debug(), G_fatal_error(), G_file_name(), G_mkdir(), G_recursive_copy(), G_strcasecmp(), GPATH_MAX, GV_DIRECTORY, GV_MODE_RW, GV_MODE_WRITE, Map_info::head, Map_info::mapset, Map_info::mode, Map_info::name, NULL, dig_head::size, Coor_info::size, Map_info::temporary, TRUE, Vect__get_element_path(), Vect__write_head(), Vect_coor_info(), VECT_OPEN, and Vect_write_dblinks().

◆ V1_close_ogr()

int V1_close_ogr ( struct Map_info * Map )

Close vector map (OGR dsn & layer) on level 1.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; non-zero on error

Definition at line 35 of file close_ogr.c.

References _, Format_info_ogr::cache, db_close_database_shutdown_driver(), Format_info_ogr::dbdriver, Format_info_ogr::driver_name, Format_info_ogr::ds, Format_info_ogr::dsn, Format_info_ogr::feature_cache, Map_info::fInfo, Map_info::format, G_debug(), G_fatal_error(), G_find_file2(), G_free(), G_free_tokens(), G_mapset(), GV_FORMAT_OGR_DIRECT, GV_MODE_RW, GV_MODE_WRITE, Format_info_ogr::layer_name, Format_info_ogr::layer_options, Map_info::mapset, Map_info::mode, Map_info::name, Format_info::ogr, Vect__free_cache(), Vect__write_head(), VECT_OPEN, and Vect_save_frmt().

◆ V1_close_pg()

int V1_close_pg ( struct Map_info * )

◆ V1_delete_line_nat()

int V1_delete_line_nat	(	struct Map_info *	Map,
		off_t	offset
	)

Deletes feature at level 1 (internal use only)

Parameters

Map	pointer Map_info structure
offset	feature offset

Returns: 0 on success; -1 on error

Definition at line 248 of file write_nat.c.

References dig__fread_port_C(), dig__fwrite_port_C(), dig_fflush(), Map_info::dig_fp, dig_fseek(), dig_set_cur_port(), G_debug(), Map_info::head, and dig_head::port.

◆ V1_delete_line_ogr()

int V1_delete_line_ogr	(	struct Map_info *	Map,
		off_t	offset
	)

Deletes feature at the given offset on level 1 (OGR interface)

Parameters

Map	pointer Map_info structure
offset	offset of feature to be deleted

Returns: 0 on success; -1 on error

Definition at line 119 of file write_ogr.c.

References _, Format_info_offset::array, Format_info_offset::array_num, Map_info::fInfo, G_debug(), G_fatal_error(), G_warning(), Format_info_ogr::layer, Format_info_ogr::offset, and Format_info::ogr.

◆ V1_delete_line_pg()

int V1_delete_line_pg	(	struct Map_info *	,
		off_t
	)

◆ V1_open_new_nat()

int V1_open_new_nat	(	struct Map_info *	Map,
		const char *	name,
		int	with_z
	)

Create new vector map (level 1)

Parameters

[out]	Map	pointer to Map_info structure
	name	vector map name to be created
	with_z	2D or 3D (unused?)

Returns: 0 success; -1 error

Definition at line 96 of file open_nat.c.

References Version_info::back_major, Version_info::back_minor, dig_head::coor_version, dig__byte_order_out(), dig__write_head(), dig_file_init(), Map_info::dig_fp, dig_init_portable(), gvfile::file, G_debug(), G_fopen_modify(), G_fopen_new(), GPATH_MAX, GV_COOR_EARLIEST_MAJOR, GV_COOR_EARLIEST_MINOR, GV_COOR_ELEMENT, GV_COOR_VER_MAJOR, GV_COOR_VER_MINOR, GV_TOPO_ELEMENT, Map_info::head, Version_info::major, Version_info::minor, name, NULL, dig_head::port, Map_info::temporary, Vect__get_element_path(), and Vect__get_path().

◆ V1_open_new_ogr()

int V1_open_new_ogr	(	struct Map_info *	Map,
		const char *	name,
		int	with_z
	)

Prepare OGR datasource for creating new OGR layer (level 1)

New OGR layer is created when writing features by Vect_wrile_line().

Parameters

[out]	Map	pointer to Map_info structure
	name	name of OGR layer to create
	with_z	WITH_Z for 3D vector data otherwise WITHOUT_Z

Returns: 0 success; -1 error

Definition at line 180 of file open_ogr.c.

References _, Format_info_ogr::driver, Format_info_ogr::driver_name, Format_info_ogr::ds, Format_info_ogr::dsn, Map_info::fInfo, G_debug(), G_fatal_error(), G_get_overwrite(), G_warning(), Format_info_ogr::layer, Format_info_ogr::layer_name, name, NULL, and Format_info::ogr.

◆ V1_open_new_pg()

int V1_open_new_pg	(	struct Map_info *	,
		const char *	,
		int
	)

◆ V1_open_old_nat()

int V1_open_old_nat	(	struct Map_info *	Map,
		int	update
	)

Open existing vector map (level 1)

Map->name and Map->mapset must be set before.

Parameters

Map	pointer to Map_info structure
update	non-zero for write mode, otherwise read-only

Returns: 0 success; -1 error

Definition at line 40 of file open_nat.c.

References _, dig__read_head(), dig_file_init(), Map_info::dig_fp, gvfile::file, G_debug(), G_fopen_modify(), G_fopen_old(), G_warning(), GPATH_MAX, GV_COOR_ELEMENT, Map_info::head, Map_info::mapset, Map_info::name, NULL, dig_head::size, Coor_info::size, Vect__get_path(), Vect_coor_info(), and Vect_get_full_name().

◆ V1_open_old_ogr()

int V1_open_old_ogr	(	struct Map_info *	Map,
		int	update
	)

Open existing OGR layer on non-topological level.

Note: Map->name, Map->mapset, Map->fInfo.ogr.dsn and Map->fInfo.ogr.layer_name must be set before.

Parameters

[in,out]	Map	pointer to Map_info structure
	update	TRUE for write mode, otherwise read-only

Returns: 0 success; -1 error

Definition at line 43 of file open_ogr.c.

References _, Format_info_ogr::cache, Format_info_ogr::ds, Format_info_ogr::dsn, FALSE, Format_info_cache::fid, Map_info::fInfo, G_debug(), G_fatal_error(), G_warning(), Map_info::head, Format_info_ogr::layer, Format_info_ogr::layer_name, NULL, Format_info::ogr, WITH_Z, dig_head::with_z, and WITHOUT_Z.

◆ V1_open_old_pg()

int V1_open_old_pg	(	struct Map_info *	,
		int
	)

◆ V1_read_line_nat()

int V1_read_line_nat	(	struct Map_info *	Map,
		struct line_pnts *	Points,
		struct line_cats *	Cats,
		off_t	offset
	)

Read vector feature on non-topological level (level 1) - native format - internal use only.

This function implements random access for native format, constraints are ignored!

Parameters

	Map	pointer to Map_info struct
[out]	Points	container used to store line points within (pointer to line_pnts struct)
[out]	Cats	container used to store line categories within (pointer to line_cats struct)
	offset	given offset

Returns: feature type (GV_POINT, GV_LINE, ...); 0 dead line; -2 nothing to read; -1 on failure

Definition at line 43 of file read_nat.c.

◆ V1_read_line_ogr()

int V1_read_line_ogr	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		off_t	offset
	)

Read feature from OGR layer at given offset (level 1 without topology)

This function implements random access on level 1.

Parameters

	Map	pointer to Map_info structure
[out]	line_p	container used to store line points within (pointer line_pnts struct)
[out]	line_c	container used to store line categories within (pointer line_cats struct)
	offset	given offset

Returns: line type; 0 dead line; -2 no more features; -1 on failure

Definition at line 179 of file read_ogr.c.

◆ V1_read_line_pg()

int V1_read_line_pg	(	struct Map_info *	,
		struct line_pnts *	,
		struct line_cats *	,
		off_t
	)

◆ V1_read_next_line_nat()

int V1_read_next_line_nat	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

Read next vector feature on non-topological level (level 1) - native format - internal use only.

This function implements sequential access, constraints are reflected, see Vect_set_constraint_region(), Vect_set_constraint_type(), or Vect_set_constraint_field().

Dead features are skipped.

Vect_rewind() can be used to reset reading.

Parameters

	Map	pointer to Map_info struct
[out]	line_p	container used to store line points within (pointer to line_pnts struct)
[out]	line_c	container used to store line categories within (pointer to line_cats struct)

Returns: feature type (GV_POINT, GV_LINE, ...); 0 dead line; -2 nothing to read; -1 on failure

Definition at line 71 of file read_nat.c.

References Map_info::constraint, Map_info::dig_fp, dig_ftell(), G_debug(), Map_info::region_flag, TRUE, and Vect_get_constraint_box().

◆ V1_read_next_line_ogr()

int V1_read_next_line_ogr	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

Read next feature from OGR layer. Skip empty features (level 1 without topology).

This function implements sequential access.

The action of this routine can be modified by:

Vect_read_constraint_region()
Vect_read_constraint_type()
Vect_remove_constraints()

Parameters

	Map	pointer to Map_info structure
[out]	line_p	container used to store line points within
[out]	line_c	container used to store line categories within

Returns: feature type; -2 no more features (EOF); -1 out of memory

Definition at line 49 of file read_ogr.c.

◆ V1_read_next_line_pg()

int V1_read_next_line_pg	(	struct Map_info *	,
		struct line_pnts *	,
		struct line_cats *
	)

◆ V1_restore_line_nat()

int V1_restore_line_nat	(	struct Map_info *	Map,
		off_t	offset,
		off_t	line
	)

Restores feature at level 1 (internal use only)

Parameters

Map	pointer to Map_info structure
offset	feature offset
line	feature id (not used)

Returns: 0 on success; -1 on error

Definition at line 350 of file write_nat.c.

◆ V1_rewind_nat()

int V1_rewind_nat ( struct Map_info * Map )

Rewind vector map to cause reads to start at beginning on non-topological level (level 1) - native format - internal use only.

Parameters

Map	pointer to Map_info struct

Returns: 0 on success; -1 on error

Definition at line 27 of file rewind_nat.c.

References Map_info::dig_fp, dig_fseek(), Map_info::head, and dig_head::head_size.

Referenced by V2_rewind_nat().

◆ V1_rewind_ogr()

int V1_rewind_ogr ( struct Map_info * Map )

Rewind vector map (OGR layer) to cause reads to start at beginning (level 1)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 32 of file rewind_ogr.c.

References _, Format_info_ogr::cache, Map_info::fInfo, G_debug(), G_fatal_error(), Format_info_ogr::layer, Format_info_cache::lines_next, Format_info_cache::lines_num, Map_info::name, and Format_info::ogr.

Referenced by V2_rewind_ogr().

◆ V1_rewind_pg()

int V1_rewind_pg ( struct Map_info * Map )

Rewind vector map (PostGIS layer) to cause reads to start at beginning (level 1)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 34 of file rewind_pg.c.

References _, Format_info_pg::cache, Format_info_cache::ctype, Format_info_cache::fid, Map_info::fInfo, G_debug(), G_fatal_error(), Format_info_cache::lines_next, Format_info_cache::lines_num, Map_info::name, Format_info_pg::next_line, Format_info::pg, and Vect__close_cursor_pg().

Referenced by V2_rewind_pg().

◆ V1_rewrite_line_nat()

off_t V1_rewrite_line_nat	(	struct Map_info *	Map,
		off_t	offset,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Rewrites feature to 'coor' file at level 1 (internal use only)

If the number of points or cats differs from the original one or the type is changed: GV_POINTS -> GV_LINES or GV_LINES -> GV_POINTS, the old one is deleted and the new is appended to the end of the file.

Old feature is deleted (marked as dead), and a new feature written.

Parameters

Map	pointer to Map_info structure
offset	feature offset
type	feature type (GV_POINT, GV_LINE, ...)
points	feature geometry
cats	feature categories

Returns: feature offset (rewritten feature); -1 on error

Definition at line 105 of file write_nat.c.

◆ V1_rewrite_line_ogr()

off_t V1_rewrite_line_ogr	(	struct Map_info *	Map,
		off_t	offset,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Rewrites feature at the given offset on level 1 (OGR interface)

This function simply calls V1_delete_line_ogr() and V1_write_line_ogr().

Parameters

Map	pointer to Map_info structure
offset	feature offset
type	feature type (see V1_write_line_ogr() for supported types)
points	pointer to line_pnts structure (feature geometry)
cats	pointer to line_cats structure (feature categories)

Returns: feature offset (rewritten feature); -1 on error

Definition at line 89 of file write_ogr.c.

◆ V1_rewrite_line_pg()

off_t V1_rewrite_line_pg	(	struct Map_info *	,
		off_t	,
		int	,
		const struct line_pnts *	,
		const struct line_cats *
	)

◆ V1_write_line_nat()

off_t V1_write_line_nat	(	struct Map_info *	Map,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Writes feature to 'coor' file at level 1 (internal use only)

Parameters

Map	pointer to Map_info structure
type	feature type (GV_POINT, GV_LINE, ...)
points	feature geometry
cats	feature categories

Returns: feature offset into file; -1 on error

Definition at line 45 of file write_nat.c.

◆ V1_write_line_ogr()

off_t V1_write_line_ogr	(	struct Map_info *	Map,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Writes feature on level 1 (OGR interface)

Note:

centroids are not supported in OGR, pseudotopo holds virtual centroids (it's coordinates determined from spatial index)
unclosed boundaries are not supported in OGR, pseudotopo treats polygons as boundaries

Supported feature types:

GV_POINT (written as wkbPoint)
GV_LINE (wkbLineString)
GV_BOUNDARY (wkbPolygon)
GV_FACE (wkbPolygon25D)
GV_KERNEL (wkbPoint25D)

Parameters

Map	pointer to Map_info structure
type	feature type
points	pointer to line_pnts structure (feature geometry)
cats	pointer to line_cats structure (feature categories)

Returns: feature index in offset array (related to pseudo-topology); -1 on error

Definition at line 63 of file write_ogr.c.

◆ V1_write_line_pg()

off_t V1_write_line_pg	(	struct Map_info *	,
		int	,
		const struct line_pnts *	,
		const struct line_cats *
	)

◆ V2_close_ogr()

int V2_close_ogr ( struct Map_info * Map )

Close vector map on topological level (write out fidx file)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; non-zero on error

Definition at line 90 of file close_ogr.c.

References _, Map_info::fInfo, G_debug(), G_fatal_error(), G_warning(), Map_info::mapset, Map_info::name, Format_info_ogr::offset, Format_info::ogr, Vect__free_offset(), VECT_OPEN, and Vect_save_fidx().

◆ V2_close_pg()

int V2_close_pg ( struct Map_info * )

◆ V2_delete_line_nat()

int V2_delete_line_nat	(	struct Map_info *	Map,
		off_t	line
	)

Deletes feature at topological level (internal use only)

Note: requires topology level >= GV_BUILD_BASE.

Parameters

pointer	to Map_info structure
line	feature id

Returns: 0 on success; -1 on error

Definition at line 290 of file write_nat.c.

◆ V2_delete_line_pg()

int V2_delete_line_pg	(	struct Map_info *	,
		off_t
	)

◆ V2_delete_line_sfa()

int V2_delete_line_sfa	(	struct Map_info *	Map,
		off_t	line
	)

Deletes feature on level 2 (OGR/PostGIS interface)

Note: Topology must be built at level >= GV_BUILD_BASE

Todo:: Update fidx

Parameters

pointer	to Map_info structure
line	feature id to be deleted

Returns: 0 on success; -1 on error

Definition at line 193 of file write_sfa.c.

◆ V2_open_old_ogr()

int V2_open_old_ogr ( struct Map_info * Map )

Open existing OGR layer on topological level.

This functions reads feature index (fidx) file required for pseudo-topology.

Parameters

[in,out] Map pointer to Map_info structure

Returns: 0 success; -1 error

Definition at line 145 of file open_ogr.c.

References _, Map_info::fInfo, G_debug(), G_fatal_error(), G_warning(), G_zero(), Map_info::mapset, Map_info::name, Format_info_ogr::next_line, Format_info_ogr::offset, Format_info::ogr, Vect_get_full_name(), and Vect_open_fidx().

◆ V2_open_old_pg()

int V2_open_old_pg ( struct Map_info * )

◆ V2_read_line_nat()

int V2_read_line_nat	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		int	line
	)

Read vector feature on topological level (level 2) - native format - internal use only.

This function implements random access for native format, constraints are ignored!

Note: Topology must be built at level >= GV_BUILD_BASE

Parameters

	Map	pointer to Map_info struct
[out]	Points	container used to store line points within (pointer to line_pnts struct)
[out]	Cats	container used to store line categories within (pointer to line_cats struct)
	line	feature id to read (starts at 1)

Returns: feature type (GV_POINT, GV_LINE, ...); -2 nothing to read; -1 on failure

Definition at line 136 of file read_nat.c.

◆ V2_read_line_pg()

int V2_read_line_pg	(	struct Map_info *	,
		struct line_pnts *	,
		struct line_cats *	,
		int
	)

◆ V2_read_line_sfa()

int V2_read_line_sfa	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		int	line
	)

Reads feature from OGR/PostGIS layer on topological level.

This function implements random access on level 2.

Note: Topology must be built at level >= GV_BUILD_BASE

Parameters

	Map	pointer to Map_info structure
[out]	line_p	container used to store line points within (pointer to line_pnts struct)
[out]	line_c	container used to store line categories within (pointer to line_cats struct)
	line	feature id (starts at 1)

Returns: feature type; -2 no more features; -1 on failure

Definition at line 40 of file read_sfa.c.

◆ V2_read_next_line_nat()

int V2_read_next_line_nat	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

Read next vector feature on topological level (level 2) - native format - internal use only.

This function implements sequential access, constraints are reflected, see Vect_set_constraint_region(), Vect_set_constraint_type(), or Vect_set_constraint_field().

Use Vect_rewind() to reset reading.

Dead feature are skipped.

Parameters

	Map	pointer to Map_info struct
[out]	line_p	container used to store line points within (pointer to line_pnts struct)
[out]	line_c	container used to store line categories within (pointer to line_cats struct)

Returns: feature type (GV_POINT, GV_LINE, ...); -2 nothing to read; -1 on error

Definition at line 178 of file read_nat.c.

◆ V2_read_next_line_ogr()

int V2_read_next_line_ogr	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

Read next feature from OGR layer on topological level.

This function implements sequential access.

Parameters

	Map	pointer to Map_info structure
[out]	line_p	container used to store line points within (pointer to line_pnts struct)
[out]	line_c	container used to store line categories within (pointer to line_cats struct)

Returns: feature type; -2 no more features (EOF); -1 on failure

Definition at line 75 of file read_ogr.c.

◆ V2_read_next_line_pg()

int V2_read_next_line_pg	(	struct Map_info *	,
		struct line_pnts *	,
		struct line_cats *
	)

◆ V2_restore_line_nat()

int V2_restore_line_nat	(	struct Map_info *	Map,
		off_t	offset,
		off_t	line
	)

Restores feature at topological level (internal use only)

Note: requires topology level >= GV_BUILD_BASE.

Parameters

Map	pointer to Map_info structure
offset	feature offset to be restored
line	feature id to be restored

Returns: 0 on success; -1 on error

Definition at line 398 of file write_nat.c.

◆ V2_rewind_nat()

int V2_rewind_nat ( struct Map_info * Map )

Rewind vector map to cause reads to start at beginning on topological level (level 2) - native format - internal use only.

Parameters

Map	pointer to Map_info struct

Returns: 0 on success; -1 on error

Definition at line 40 of file rewind_nat.c.

References Map_info::next_line, and V1_rewind_nat().

◆ V2_rewind_ogr()

int V2_rewind_ogr ( struct Map_info * Map )

Rewind vector map (OGR layer) to cause reads to start at beginning on topological level (level 2)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 61 of file rewind_ogr.c.

References _, G_debug(), G_fatal_error(), Map_info::name, Map_info::next_line, and V1_rewind_ogr().

◆ V2_rewind_pg()

int V2_rewind_pg ( struct Map_info * Map )

Rewind vector map (PostGIS layer) to cause reads to start at beginning on topological level (level 2)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 70 of file rewind_pg.c.

References _, G_debug(), G_fatal_error(), Map_info::name, Map_info::next_line, and V1_rewind_pg().

◆ V2_rewrite_line_nat()

off_t V2_rewrite_line_nat	(	struct Map_info *	Map,
		off_t	line,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Rewrites feature to 'coor' file at topological level (internal use only)

Note: requires topology level >= GV_BUILD_BASE.

Note: Function returns feature id, but is defined as off_t for compatibility with level 1 functions.

Parameters

Map	pointer to Map_info structure
line	feature id to be rewritten
type	feature type (GV_POINT, GV_LINE, ...)
points	feature geometry
cats	feature categories

Returns: new feature id or 0 (build level < GV_BUILD_BASE); -1 on error

Definition at line 161 of file write_nat.c.

◆ V2_rewrite_line_pg()

off_t V2_rewrite_line_pg	(	struct Map_info *	,
		off_t	,
		int	,
		const struct line_pnts *	,
		const struct line_cats *
	)

◆ V2_rewrite_line_sfa()

off_t V2_rewrite_line_sfa	(	struct Map_info *	Map,
		off_t	line,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Rewrites feature at the given offset on level 2 (OGR/PostGIS interface, pseudo-topological level)

Note: Topology must be built at level >= GV_BUILD_BASE

Parameters

Map	pointer to Map_info structure
line	feature id to be rewritten
type	feature type (see V1_write_line_ogr() for supported types)
points	pointer to line_pnts structure (feature geometry)
cats	pointer to line_cats structure feature categories

Returns: feature index in offset array (related to pseudo-topology); -1 on error

Definition at line 152 of file write_sfa.c.

◆ V2_write_line_nat()

off_t V2_write_line_nat	(	struct Map_info *	Map,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Writes feature to 'coor' file at topological level (internal use only)

Note: Function returns feature id, but is defined as off_t for compatibility with level 1 functions.

Parameters

Map	pointer to Map_info structure
type	feature type (GV_POINT, GV_LINE, ...)
points	feature geometry
cats	feature categories

Returns: new feature id; 0 topology is not requested to be built (build level < GV_BUILD_BASE); -1 on error

Definition at line 67 of file write_nat.c.

◆ V2_write_line_pg()

off_t V2_write_line_pg	(	struct Map_info *	,
		int	,
		const struct line_pnts *	,
		const struct line_cats *
	)

◆ V2_write_line_sfa()

off_t V2_write_line_sfa	(	struct Map_info *	Map,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Writes feature on level 2 (OGR/PostGIS interface, pseudo-topological level)

Parameters

Map	pointer to Map_info structure
type	feature type (see V1_write_line_ogr() for list of supported types)
points	pointer to line_pnts structure (feature geometry)
cats	pointer to line_cats structure (feature categories)

Returns: feature index in offset array (related to pseudo-topology); -1 on error

Definition at line 52 of file write_sfa.c.

◆ V__map_overlap()

int V__map_overlap	(	struct Map_info *	Map,
		double	n,
		double	s,
		double	e,
		double	w
	)

Check if region overlaps with map extent.

Parameters

Map	vector map
n,s,e,w	region bounding box

Returns: 1 if regions overlap; 0 if not

Definition at line 28 of file overlap.c.

◆ Vect__build_downgrade()

void Vect__build_downgrade	(	struct Map_info *	Map,
		int	build
	)

Downgrade build level (for internal use only)

See Vect_build_nat(), Vect__build_sfa(), and Vect_build_pg() for implementation issues.

Parameters

Map	pointer to Map_info
build

Definition at line 771 of file build.c.

Referenced by Vect__build_sfa().

◆ Vect__build_sfa()

int Vect__build_sfa	(	struct Map_info *	Map,
		int	build
	)

Build pseudo-topology (for simple features) - internal use only.

See Vect_build_ogr() and Vect_build_pg() for implementation issues.

Build levels:

GV_BUILD_NONE
GV_BUILD_BASE
GV_BUILD_ATTACH_ISLES
GV_BUILD_CENTROIDS
GV_BUILD_ALL

Parameters

Map	pointer to Map_info structure
build	build level

Returns: 1 on success; 0 on error

Definition at line 700 of file build_sfa.c.

References Plus_head::built, Map_info::format, GV_BUILD_BASE, GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, Map_info::plus, and Vect__build_downgrade().

Referenced by Vect_build_ogr(), and Vect_build_pg().

◆ Vect__init_head()

void Vect__init_head ( struct Map_info * Map )

Initialize Map_info head structure (dig_head)

Parameters

[in,out] Map pointer to Map_info structure

Definition at line 29 of file init_head.c.

References FALSE, G_date(), G_whoami(), G_zero(), Map_info::head, Map_info::plus, Plus_head::release_support, Plus_head::Spidx_built, Plus_head::update_cidx, Vect_set_comment(), Vect_set_date(), Vect_set_map_date(), Vect_set_map_name(), Vect_set_organization(), Vect_set_person(), Vect_set_proj(), Vect_set_scale(), Vect_set_thresh(), and Vect_set_zone().

Referenced by Vect__read_head().

◆ Vect__intersect_line_with_poly()

int Vect__intersect_line_with_poly	(	const struct line_pnts *	,
		double	,
		struct line_pnts *
	)

◆ Vect__read_head()

int Vect__read_head ( struct Map_info * Map )

Reads head information from text file (GV_HEAD_ELEMENT) - for internal use only.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 118 of file vector/Vlib/header.c.

References _, G_debug(), G_fopen_old(), G_getl2(), G_warning(), GPATH_MAX, GV_HEAD_ELEMENT, Map_info::mapset, Map_info::name, NULL, Vect__get_path(), Vect__init_head(), Vect_get_full_name(), Vect_set_comment(), Vect_set_date(), Vect_set_map_date(), Vect_set_map_name(), Vect_set_organization(), Vect_set_person(), Vect_set_proj(), Vect_set_scale(), Vect_set_thresh(), and Vect_set_zone().

Referenced by Vect_read_header().

◆ Vect__write_head()

int Vect__write_head ( struct Map_info * Map )

Writes head information to text file (GV_HEAD_ELEMENT)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 79 of file vector/Vlib/header.c.

References _, G_fopen_new(), G_warning(), GPATH_MAX, GV_HEAD_ELEMENT, NULL, Vect__get_path(), Vect_get_comment(), Vect_get_date(), Vect_get_full_name(), Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), Vect_get_person(), Vect_get_proj(), Vect_get_scale(), Vect_get_thresh(), and Vect_get_zone().

Referenced by V1_close_nat(), V1_close_ogr(), V1_close_pg(), and Vect_write_header().

◆ Vect_add_dblink()

int Vect_add_dblink	(	struct dblinks *	p,
		int	number,
		const char *	name,
		const char *	table,
		const char *	key,
		const char *	db,
		const char *	driver
	)

Add new DB connection to dblinks structure.

Parameters

[in,out]	p	pointer to existing dblinks structure
	number	layer number (1 for OGR)
	name	layer name (layer for OGR) - if not given use table name
	table	table name (layer for OGR)
	key	key name
	db	database name (datasource for OGR)
	driver	driver name (dbf, postgresql, ogr, ...)

Returns: 0 on success; -1 error

Definition at line 285 of file field.c.

◆ Vect_append_point()

int Vect_append_point	(	struct line_pnts *	Points,
		double	x,
		double	y,
		double	z
	)

Appends one point to the end of a line.

If you are re-using a line struct, be sure to clear out old data first by calling Vect_reset_line().

Calls G_fatal_error() when out of memory.

Parameters

Points	pointer to line_pnts structure
x,y,z	point coordinates to be added

Returns: number of points; -1 on error (out of memory)

Definition at line 148 of file line.c.

◆ Vect_append_points()

int Vect_append_points	(	struct line_pnts *	Points,
		const struct line_pnts *	APoints,
		int	direction
	)

Appends points to the end of a line.

Note, this will append to whatever is in line_pnts structure. If you are re-using a line struct, be sure to clear out old data first by calling Vect_reset_line().

Parameters

Points	pointer to line_pnts structure
APoints	points to be included
direction	direction (GV_FORWARD, GV_BACKWARD)

Returns: new number of points; -1 on out of memory

Definition at line 335 of file line.c.

◆ Vect_area_alive()

int Vect_area_alive	(	struct Map_info *	Map,
		int	area
	)

Check if area is alive or dead (topological level required)

Note: Topology must be built at level >= GV_BUILD_AREAS

Parameters

Map	pointer to Map_info structure
area	area id

Returns: 1 area alive; 0 area is dead or index is out of range

Definition at line 253 of file vector/Vlib/read.c.

References _, Plus_head::Area, G_warning(), Plus_head::n_areas, NULL, and Map_info::plus.

Referenced by vector2perimeters(), and Vedit_delete_areas_cat().

◆ Vect_area_buffer2()

void Vect_area_buffer2	(	struct Map_info *	Map,
		int	area,
		double	da,
		double	db,
		double	dalpha,
		int	round,
		int	caps,
		double	tol,
		struct line_pnts **	oPoints,
		struct line_pnts ***	iPoints,
		int *	inner_count
	)

Creates buffer around area.

Parameters

	Map	vector map
	area	area id
	da	distance along major axis
	db	distance along minor axis
	dalpha	angle between 0x and major axis
	round	make corners round
	caps	add caps at line ends
	tol	maximum distance between theoretical arc and output segments
[out]	oPoints	output polygon outer border (ccw order)
[out]	inner_count	number of holes
[out]	iPoints	array of output polygon's holes (cw order)

Definition at line 1074 of file buffer2.c.

◆ Vect_array_to_cat_list()

int Vect_array_to_cat_list	(	const int *	vals,
		int	nvals,
		struct cat_list *	list
	)

Convert ordered array of integers to cat_list structure.

Parameters

	vals	array of integers
	nvals	number of values
[in,out]	list	pointer to cat_list structure

Returns: number of ranges

Definition at line 446 of file vector/Vlib/cats.c.

References G_debug(), and G_realloc.

◆ Vect_attach_centroids()

int Vect_attach_centroids	(	struct Map_info *	Map,
		const struct bound_box *	box
	)

(Re)Attach centroids in given bounding box to areas

Warning: If map is updated on level2, it may happen that previously correct island becomes incorrect. In that case, centroid of area forming the island is reattached to outer area, because island polygon is not excluded.

+-----------+     +-----------+
|   1       |     |   1       |
| +---+---+ |     | +---+---+ |
| | 2 | 3 | |     | | 2 |     |
| | x |   | |  -> | | x |     |
| |   |   | |     | |   |     |
| +---+---+ |     | +---+---+ |
|           |     |           |
+-----------+     +-----------+
centroid is       centroid is
attached to 2     reattached to 1

Because of this, when the centroid is reattached to another area, it is always necessary to check if original area exist, unregister centroid from previous area. To simplify code, this is implemented so that centroid is always first unregistered and if new area is found, it is registered again.

Parameters

Map	vector map
box	bounding box

Returns: 0

Definition at line 505 of file build.c.

◆ Vect_attach_isle()

int Vect_attach_isle	(	struct Map_info *	Map,
		int	isle,
		const struct bound_box *	box
	)

(Re)Attach isle to area

Parameters

Map	vector map
isle	isle id
box	isle bbox

Returns: 0

Definition at line 385 of file build.c.

References P_isle::area, Plus_head::box, dig_area_add_isle(), G_debug(), Plus_head::Isle, Map_info::plus, and Vect_isle_find_area().

Referenced by Vect_attach_isles().

◆ Vect_attach_isles()

int Vect_attach_isles	(	struct Map_info *	Map,
		const struct bound_box *	box
	)

(Re)Attach isles in given bounding box to areas

The warning for Vect_attach_centroids() applies here as well

Parameters

Map	vector map
box	bounding box

Returns: 0

Definition at line 427 of file build.c.

References P_isle::area, Plus_head::box, boxlist::box, dig_area_del_isle(), bound_box::E, G_debug(), boxlist::id, Plus_head::Isle, bound_box::N, boxlist::n_values, NULL, Map_info::plus, bound_box::S, TRUE, Vect_attach_isle(), Vect_get_area_box(), Vect_new_boxlist(), Vect_select_isles_by_box(), and bound_box::W.

◆ Vect_box_clip()

int Vect_box_clip	(	double *	x,
		double *	y,
		double *	c_x,
		double *	c_y,
		const struct bound_box *	Box
	)

Clip coordinates to box, if necessary, lines extending outside of a box.

A line represented by the coordinates x, y and c_x, c_y is clipped to the window defined by s (south), n (north), w (west), and e (east). Note that the following constraints must be true: w <e s <n The x and c_x are values to be compared to w and e. The y and c_y are values to be compared to s and n. The x and c_x values returned lie between w and e. The y and c_y values returned lie between s and n.

Parameters

x,y	coordinates (w, e)
c_x,c_y	coordinates (s, n)
Box	boundary box

Returns: 1 if any clipping occurred; 0 otherwise

Definition at line 162 of file vector/Vlib/box.c.

References Box, W, and x.

◆ Vect_box_copy()

int Vect_box_copy	(	struct bound_box *	A,
		const struct bound_box *	B
	)

Copy box B to box A.

Parameters

A	boundary A
B	boundary B

Returns: 1

Definition at line 101 of file vector/Vlib/box.c.

Referenced by Vect_get_map_box().

◆ Vect_box_extend()

int Vect_box_extend	(	struct bound_box *	A,
		const struct bound_box *	B
	)

Extend box A by box B.

Parameters

A	boundary A
B	boundary B

Returns: 1

Definition at line 122 of file vector/Vlib/box.c.

◆ Vect_box_overlap()

int Vect_box_overlap	(	const struct bound_box *	A,
		const struct bound_box *	B
	)

Tests for overlap of two boxes.

Parameters

A	boundary box A
B	boundary box B

Returns: 1 boxes overlap; 0 boxes do not overlap

Definition at line 82 of file vector/Vlib/box.c.

◆ Vect_boxlist_append()

int Vect_boxlist_append	(	struct boxlist *	list,
		int	id,
		const struct bound_box *	box
	)

Append new item to the end of list if not yet present.

Parameters

[in,out]	list	pointer to ilist structure
	id	new item to append to the end of list
	box	bounding box

Returns: 0 on success; 1 on error

Definition at line 287 of file vector/Vlib/list.c.

References G_realloc, and NULL.

Referenced by Vect_boxlist_append_boxlist().

◆ Vect_boxlist_append_boxlist()

int Vect_boxlist_append_boxlist	(	struct boxlist *	alist,
		const struct boxlist *	blist
	)

Append new items to the end of list if not yet present.

Parameters

[in,out]	alist	pointer to boxlist structure where items will be appended
	blist	pointer to boxlist structure with new items

Returns: 0 on success; 1 on error

Definition at line 330 of file vector/Vlib/list.c.

References bound_box::B, boxlist::box, bound_box::E, boxlist::have_boxes, boxlist::id, bound_box::N, boxlist::n_values, NULL, bound_box::S, bound_box::T, Vect_boxlist_append(), and bound_box::W.

◆ Vect_boxlist_delete()

int Vect_boxlist_delete	(	struct boxlist *	list,
		int	id
	)

Remove a given value (item) from list.

Parameters

[in,out]	list	pointer to boxlist structure
	id	to remove

Returns: 0 on success; 1 on error

Definition at line 362 of file vector/Vlib/list.c.

References NULL.

Referenced by Vect_boxlist_delete_boxlist().

◆ Vect_boxlist_delete_boxlist()

int Vect_boxlist_delete_boxlist	(	struct boxlist *	alist,
		const struct boxlist *	blist
	)

Delete list from existing list.

Parameters

[in,out]	alist	pointer to original boxlist structure,
	blist	pointer to boxlist structure with items to delete

Returns: 0 on success; 1 on error

Definition at line 394 of file vector/Vlib/list.c.

References boxlist::id, boxlist::n_values, NULL, and Vect_boxlist_delete().

◆ Vect_break_lines()

void Vect_break_lines	(	struct Map_info *	Map,
		int	type,
		struct Map_info *	Err
	)

Break lines in vector map at each intersection.

For details see Vect_break_lines_list().

Parameters

	Map	input vector map
	type	feature type
[out]	Err	vector map where points at intersections will be written or NULL

Definition at line 33 of file break_lines.c.

◆ Vect_break_lines_list()

int Vect_break_lines_list	(	struct Map_info *	Map,
		struct ilist *	List_break,
		struct ilist *	List_ref,
		int	type,
		struct Map_info *	Err
	)

Break selected lines in vector map at each intersection.

Breaks selected lines specified by type in vector map. Points at intersections may be optionally written to error map. Input vector map must be opened on level 2 for update at least on GV_BUILD_BASE.

The function also breaks lines forming collapsed loop, for example 0,0;1,0;0,0 is broken at 1,0.

If reference lines are given (List_ref) break only lines which intersect reference lines.

Parameters

	Map	input vector map
	List_break	list of lines (NULL for all lines in vector map)
	List_ref	list of reference lines or NULL
	type	feature type
[out]	Err	vector map where points at intersections will be written or NULL

Returns: number of intersections

Definition at line 63 of file break_lines.c.

◆ Vect_break_polygons()

void Vect_break_polygons	(	struct Map_info *	Map,
		int	type,
		struct Map_info *	Err
	)

Break polygons in vector map.

Breaks lines specified by type in vector map. Points at intersections may be optionally written to error map. Input vector map must be opened on level 2 for update at least on GV_BUILD_BASE.

Function is optimized for closed polygons rings (e.g. imported from OGR) but with clean geometry - adjacent polygons mostly have identical boundary. Function creates database of ALL points in the vector map, and then is looking for those where polygons should be broken. Lines may be broken only at points existing in input vector map!

Parameters

Map	input map where polygons will be broken
type	type of line to be broken (GV_LINE or GV_BOUNDARY)
Err	vector map where points at intersections will be written or NULL

Definition at line 675 of file break_polygons.c.

◆ Vect_build()

int Vect_build ( struct Map_info * Map )

Build topology for vector map.

Parameters

Map	vector map

Returns: 1 on success; 0 on error

Definition at line 586 of file build.c.

References GV_BUILD_ALL, and Vect_build_partial().

Referenced by Vect_close().

◆ Vect_build_line_area()

int Vect_build_line_area	(	struct Map_info *	Map,
		int	iline,
		int	side
	)

Build area on given side of line (GV_LEFT or GV_RIGHT)

Parameters

Map	pointer to Map_info structure
iline	line id
side	side (GV_LEFT or GV_RIGHT)

Returns: > 0 area id; < 0 isle id; 0 not created (may also already exist)

Definition at line 79 of file build.c.

References _, dig_add_area(), dig_add_isle(), dig_build_area_with_line(), dig_find_area_poly(), dig_line_box(), dig_line_get_area(), G_debug(), G_fatal_error(), G_warning(), line_pnts::n_points, NULL, Map_info::plus, Vect__get_area_points(), Vect_line_prune(), and Vect_new_line_struct().

◆ Vect_build_nat()

int Vect_build_nat	(	struct Map_info *	Map,
		int	build
	)

Build topology.

Parameters

Map	vector map
build	build level

Returns: 1 on success; 0 on error

Definition at line 34 of file build_nat.c.

◆ Vect_build_ogr()

int Vect_build_ogr	(	struct Map_info *	Map,
		int	build
	)

Build pseudo-topology (simple features) for OGR layer.

Build levels:

GV_BUILD_NONE
GV_BUILD_BASE
GV_BUILD_ATTACH_ISLES
GV_BUILD_CENTROIDS
GV_BUILD_ALL

Parameters

Map	pointer to Map_info structure
build	build level

Returns: 1 on success; 0 on error

Definition at line 49 of file build_ogr.c.

References _, Format_info_offset::array, Plus_head::built, Format_info_ogr::ds, Format_info_ogr::dsn, Map_info::fInfo, G_debug(), G_fatal_error(), G_free(), G_message(), G_warning(), G_zero(), GV_BUILD_BASE, GV_BUILD_NONE, Format_info_ogr::layer, Format_info_ogr::layer_name, Format_info_ogr::offset, Format_info::ogr, Map_info::plus, Vect__build_sfa(), Vect_get_finfo_format_info(), and Vect_get_finfo_geometry_type().

◆ Vect_build_partial()

int Vect_build_partial	(	struct Map_info *	Map,
		int	build
	)

Build partial topology for vector map.

Should only be used in special cases of vector processing.

This functions optionally builds only some parts of topology. Highest level is specified by build parameter which may be:

GV_BUILD_NONE - nothing is build
GV_BUILD_BASE - basic topology, nodes, lines, spatial index;
GV_BUILD_AREAS - build areas and islands, but islands are not attached to areas;
GV_BUILD_ATTACH_ISLES - attach islands to areas;
GV_BUILD_CENTROIDS - assign centroids to areas, build category index;
GV_BUILD_ALL - top level, the same as GV_BUILD_CENTROIDS.

If functions is called with build lower than current value of the Map, the level is downgraded to requested value.

All calls to Vect_write_line(), Vect_rewrite_line(), Vect_delete_line() respect the last value of build used in this function.

Note that the functions has effect only if requested level is higher than current level, to rebuild part of topology, call first downgrade and then upgrade, for example:

Vect_build()
Vect_build_partial(,GV_BUILD_BASE,)
Vect_build_partial(,GV_BUILD_AREAS,)

Parameters

Map	vector map
build	highest level of build

Returns: 1 on success; 0 on error

Definition at line 861 of file build.c.

References _, Plus_head::built, dig_cidx_free(), dig_cidx_init(), Map_info::fInfo, Map_info::format, G_debug(), G_fatal_error(), G_message(), GV_BUILD_ALL, GV_BUILD_NONE, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, Map_info::head, Map_info::level, LEVEL_1, Format_info::pg, Map_info::plus, Plus_head::Spidx_built, Plus_head::spidx_with_z, Map_info::support_updated, Map_info::temporary, Format_info_pg::toposchema_name, TRUE, Vect_get_full_name(), Vect_open_sidx(), dig_head::with_z, and Plus_head::with_z.

Referenced by Vect_build().

◆ Vect_build_pg()

int Vect_build_pg	(	struct Map_info *	,
		int
	)

◆ Vect_build_sidx()

int Vect_build_sidx ( struct Map_info * Map )

Create spatial index if necessary.

To be used in modules. Map must be opened on level 2.

Parameters

[in,out] Map pointer to vector map

Returns: 0 OK; 1 error

Definition at line 1224 of file build.c.

References _, G_fatal_error(), Map_info::level, Map_info::plus, Plus_head::Spidx_built, and Vect_build_sidx_from_topo().

◆ Vect_build_sidx_from_topo()

int Vect_build_sidx_from_topo ( struct Map_info * Map )

Create spatial index from topology if necessary (not longer supported)

Parameters

Map	pointer to vector map

Returns: 1

Definition at line 1244 of file build.c.

References _, G_debug(), G_warning(), and Vect_get_full_name().

Referenced by Vect_build_sidx(), and Vect_sidx_dump().

◆ Vect_cat_del()

int Vect_cat_del	(	struct line_cats *	Cats,
		int	field
	)

Delete all categories of given layer.

Parameters

[in,out]	Cats	line_cats structure
	field	layer number

Returns: number of categories deleted; 0 layer does not exist

Definition at line 222 of file vector/Vlib/cats.c.

References line_cats::cat, line_cats::field, and line_cats::n_cats.

Referenced by Vect_field_cat_del().

◆ Vect_cat_get()

int Vect_cat_get	(	const struct line_cats *	Cats,
		int	field,
		int *	cat
	)

Get first found category of given field.

cat is set to first category found or -1 if field was not found

Parameters

	Cats	pointer line_cats structure
	field	layer number
[out]	cat	pointer to variable where cat will be written (can be NULL)

Returns: number of found cats for given field (first reported); 0 layer does not exist

Definition at line 156 of file vector/Vlib/cats.c.

References line_cats::cat, line_cats::field, GV_FIELD_MAX, and line_cats::n_cats.

Referenced by NetA_initialise_varray().

◆ Vect_cat_in_array()

int Vect_cat_in_array	(	int	cat,
		const int *	array,
		int	ncats
	)

Check if category is in ordered array of integers.

Parameters

cat	category number
array	ordered array of integers
ncats	number of categories in array

Returns: TRUE if cat is in list; FALSE if it is not

Definition at line 710 of file vector/Vlib/cats.c.

◆ Vect_cat_in_cat_list()

int Vect_cat_in_cat_list	(	int	cat,
		const struct cat_list *	list
	)

Check if category number is in list.

Parameters

cat	category number
list	cat_list structure

Returns: TRUE if cat is in list; FALSE if not

Definition at line 544 of file vector/Vlib/cats.c.

References FALSE, max, and TRUE.

Referenced by Vect_cats_in_constraint().

◆ Vect_cat_list_to_array()

int Vect_cat_list_to_array	(	const struct cat_list *	list,
		int **	vals,
		int *	nvals
	)

Convert cat_list struct to ordered array of unique integers.

Output array do not contain duplicate items.

Allocated array should be freed by G_free().

Parameters

	cat_list	pointer to cat_list struct
[out]	vals	array of integers
[out]	nvals	number of values

Returns: 0 on success; -1 on failure

Definition at line 489 of file vector/Vlib/cats.c.

References G_debug(), G_realloc, and NULL.

◆ Vect_cat_set()

int Vect_cat_set	(	struct line_cats *	Cats,
		int	field,
		int	cat
	)

Add new field/cat to category structure if doesn't exist yet.

Parameters

[in,out]	Cats	line_cats structure
[in]	field	layer number
[in]	cat	category number

Returns

number of categories

0 if no space for new category in structure, n_cats would be > GV_NCATS_MAX

-1 on out of memory

-2 if field out of range: 1

GV_FIELD_MAX or cat out of range: 1 - GV_CAT_MAX

Definition at line 103 of file vector/Vlib/cats.c.

References _, line_cats::alloc_cats, line_cats::cat, dig_alloc_cats(), line_cats::field, G_fatal_error(), GV_NCATS_MAX, and line_cats::n_cats.

◆ Vect_cats_in_constraint()

int Vect_cats_in_constraint	(	struct line_cats *	Cats,
		int	layer,
		struct cat_list *	list
	)

Check if categories match with category constraints.

Parameters

Cats	line_cats structure
layer	layer number
list	cat_list structure

Returns: 0 no match, categories are outside constraints; 1 match, categories are inside constraints

Definition at line 671 of file vector/Vlib/cats.c.

References _, line_cats::cat, line_cats::field, G_warning(), line_cats::n_cats, and Vect_cat_in_cat_list().

◆ Vect_cats_set_constraint()

struct cat_list* Vect_cats_set_constraint	(	struct Map_info *	Map,
		int	layer,
		char *	where,
		char *	catstr
	)

Set category constraints using 'where' or 'cats' option and layer number.

Parameters

Map	pointer to Map_info structure
layer	layer number
where	where statement
catstr	category list as string

Returns: pointer to cat_list structure or NULL

Definition at line 566 of file vector/Vlib/cats.c.

References _, field_info::database, db_close_database_shutdown_driver(), db_select_int(), db_start_driver_open_database(), field_info::driver, G_fatal_error(), G_verbose_message(), G_warning(), field_info::key, list, n_, NULL, field_info::table, and Vect_get_field().

◆ Vect_check_dblink()

int Vect_check_dblink	(	const struct dblinks *	p,
		int	field,
		const char *	name
	)

Check if DB connection exists in dblinks structure.

Parameters

p	pointer to existing dblinks structure
field	layer number
name	layer name

Returns: 1 dblink for field exists; 0 dblink does not exist for field

Definition at line 252 of file field.c.

References dblinks::field, G_debug(), dblinks::n_fields, field_info::name, name, NULL, and field_info::number.

Referenced by Vect_map_check_dblink().

◆ Vect_check_input_output_name()

int Vect_check_input_output_name	(	const char *	input,
		const char *	output,
		int	error
	)

Check for input and output vector map name.

Check

output is legal vector name
if can find input map
if input was found in current mapset, check if input != output

Parameters

input	input name
output	output name
error	error type G_FATAL_EXIT, G_FATAL_PRINT, G_FATAL_RETURN

Returns: 0 OK; 1 error

Definition at line 93 of file legal_vname.c.

◆ Vect_check_line_breaks()

int Vect_check_line_breaks	(	struct Map_info *	Map,
		int	type,
		struct Map_info *	Err
	)

Check for and count intersecting lines, do not break.

For details see Vect_check_line_breaks_list().

Parameters

	Map	input vector map
	type	feature type
[out]	Err	vector map where points at intersections will be written or NULL

Returns: number for intersections

Definition at line 82 of file break_lines.c.

◆ Vect_check_line_breaks_list()

int Vect_check_line_breaks_list	(	struct Map_info *	Map,
		struct ilist *	List_break,
		struct ilist *	List_ref,
		int	type,
		struct Map_info *	Err
	)

Check for and count intersecting lines, do not break.

If List_break is given, only lines in the list are checked for intersections.

If reference lines are given (List_ref) break only lines which intersect reference lines.

Parameters

	Map	input vector map
	List_break	list of lines (NULL for all lines in vector map)
	List_ref	list of reference lines or NULL
	type	feature type
[out]	Err	vector map where points at intersections will be written or NULL

Returns: number of intersections

Definition at line 105 of file break_lines.c.

◆ Vect_chtype_bridges()

void Vect_chtype_bridges	(	struct Map_info *	Map,
		struct Map_info *	Err,
		int *	lines_changed,
		int *	bridges_changed
	)

Change type of bridges in vector map.

Change the type of bridges (type boundary) connecting areas to islands or 2 islands. Islands and areas must be already clean, i.e. without dangles. Bridge may be formed by more lines. Optionally changed bridges are written to error map. Input map must be opened on level 2 for update at least on level GV_BUILD_BASE.

Parameters

Map	input map where bridges are changed
Err	vector map where changed bridges are written or NULL
lines_changed	number of lines changed
bridges_changed	Err number of bridges changed

Definition at line 69 of file bridges.c.

◆ Vect_chtype_dangles()

void Vect_chtype_dangles	(	struct Map_info *	Map,
		double	maxlength,
		struct Map_info *	Err
	)

Change boundary dangles to lines.

Boundary is considered to be a dangle if on at least one end node is no other boundary. If a dangle is formed by more boundaries, such string of boundaries is taken as one dangle.

Optionally deleted dangles are written to error map.

Input map must be opened on level 2 for update at least on GV_BUILD_BASE.

Parameters

	Map	input map where have to be deleted
	maxlength	maxlength of dangles or -1 for all dangles
[out]	Err	vector map where deleted dangles are written or NULL

Returns

Definition at line 74 of file dangles.c.

◆ Vect_cidx_dump()

int Vect_cidx_dump	(	struct Map_info *	Map,
		FILE *	out
	)

Write (dump) category index in text form to file.

Parameters

	Map	pointer to Map_info structure
[out]	out	output file

Returns: 1 on success; 0 on error

Definition at line 420 of file Vlib/cindex.c.

References Cat_index::field, and G_debug().

◆ Vect_cidx_find_all()

void Vect_cidx_find_all	(	struct Map_info *	Map,
		int	layer,
		int	type_mask,
		int	cat,
		struct ilist *	lines
	)

Find all line/area id's for given category.

Parameters

	Map	pointer to Map_info structure
	layer	layer number
	type_mask	feature type of objects to search for
	cat	category number
[out]	lines	array of ids of found lines/points

Definition at line 373 of file Vlib/cindex.c.

◆ Vect_cidx_find_next()

int Vect_cidx_find_next	(	struct Map_info *	Map,
		int	field_index,
		int	cat,
		int	type_mask,
		int	start_index,
		int *	type,
		int *	id
	)

Find next line/area id for given category, start_index and type_mask.

Parameters

	Map	pointer to Map_info structure
	field_index	layer index
	cat	category number
	type_mask	requested feature type
	start_index	start search at this index (0 - whole category index)
[out]	type	returned type
[out]	id	returned line/area id

Returns: index to array; -1 not found

Definition at line 327 of file Vlib/cindex.c.

◆ Vect_cidx_get_cat_by_index()

int Vect_cidx_get_cat_by_index	(	struct Map_info *	Map,
		int	field_index,
		int	cat_index,
		int *	cat,
		int *	type,
		int *	id
	)

Get category, feature type and id for given layer and category index.

Parameters

	Map	pointer to Map_info structure
	field_index	layer index
	cat_index	category index
[out]	cat	category number
[out]	type	feature type
[out]	id	feature id

Returns: 1 on success; 0 on error

Definition at line 262 of file Vlib/cindex.c.

◆ Vect_cidx_get_field_index()

int Vect_cidx_get_field_index	(	struct Map_info *	Map,
		int	field
	)

Get layer index for given layer number.

Parameters

Map	pointer to Map_info structure
field	layer number

Returns: layer index; -1 if not found

Definition at line 115 of file Vlib/cindex.c.

References G_debug().

◆ Vect_cidx_get_field_number()

int Vect_cidx_get_field_number	(	struct Map_info *	Map,
		int	index
	)

Get layer number for given index.

G_fatal_error() is called when index not found.

Parameters

Map	pointer to Map_info structure
index	layer index: from 0 to Vect_cidx_get_num_fields() - 1

Returns: layer number

Definition at line 98 of file Vlib/cindex.c.

◆ Vect_cidx_get_num_cats_by_index()

int Vect_cidx_get_num_cats_by_index	(	struct Map_info *	Map,
		int	index
	)

Get number of categories for given layer index.

Parameters

Map	pointer to Map_info structure
index	layer index

Returns: number of categories; -1 on error

Definition at line 161 of file Vlib/cindex.c.

◆ Vect_cidx_get_num_fields()

int Vect_cidx_get_num_fields ( struct Map_info * Map )

Get number of layers in category index.

Parameters

Map	pointer to Map_info structure

Returns: number of layers

Definition at line 81 of file Vlib/cindex.c.

◆ Vect_cidx_get_num_types_by_index()

int Vect_cidx_get_num_types_by_index	(	struct Map_info *	Map,
		int	field_index
	)

Get number of feature types for given layer index.

G_fatal_error() is called when index not found.

Parameters

Map	pointer to Map_info structure
field_index	layer index

Returns: number of feature types; -1 on error

Definition at line 180 of file Vlib/cindex.c.

◆ Vect_cidx_get_num_unique_cats_by_index()

int Vect_cidx_get_num_unique_cats_by_index	(	struct Map_info *	Map,
		int	index
	)

Get number of unique categories for given layer index.

G_fatal_error() is called when index not found.

Parameters

Map	pointer to Map_info structure
index	layer index (starts at 0)

Returns: number of unique categories; -1 on error

Definition at line 144 of file Vlib/cindex.c.

◆ Vect_cidx_get_type_count()

int Vect_cidx_get_type_count	(	struct Map_info *	Map,
		int	field,
		int	type
	)

Get count of features of certain type by layer and type.

Parameters

Map	pointer to Map_info structure
field	layer number
type	feature type

Returns: feature count; 0 if no features, no such field or no such type in category index

Definition at line 223 of file Vlib/cindex.c.

◆ Vect_cidx_get_type_count_by_index()

int Vect_cidx_get_type_count_by_index	(	struct Map_info *	Map,
		int	field_index,
		int	type_index,
		int *	type,
		int *	count
	)

Get count of feature types for given field and type index.

Parameters

	Map	pointer to Map_info structure
	field_index	layer index
	type_index	type index
[out]	type	feature type (GV_POINT, ...)
[out]	count	number of features or NULL

Returns: 1 on success; 0 on error

Definition at line 200 of file Vlib/cindex.c.

◆ Vect_cidx_get_unique_cats_by_index()

int Vect_cidx_get_unique_cats_by_index	(	struct Map_info *	Map,
		int	field_index,
		struct ilist *	list
	)

Get list of unique categories for given layer index.

Parameters

	Map	pointer to Map_info structure
	field_index	layer index
[out]	list	output list of cats

Returns: 1 on success; 0 on error

Definition at line 288 of file Vlib/cindex.c.

◆ Vect_cidx_open()

int Vect_cidx_open	(	struct Map_info *	Map,
		int	head_only
	)

Read category index from cidx file if exists.

Parameters

Map	pointer to Map_info structure
head_only	read only header of the file

Returns: 0 on success; 1 if file does not exist; -1 error, file exists but cannot be read

Definition at line 522 of file Vlib/cindex.c.

References _, dig_file_init(), dig_read_cidx(), gvfile::file, G_debug(), G_fopen_old(), G_warning(), GPATH_MAX, GV_CIDX_ELEMENT, Map_info::mapset, Map_info::name, NULL, Map_info::plus, Vect__get_element_path(), Vect__get_path(), and Vect_get_full_name().

◆ Vect_cidx_save()

int Vect_cidx_save ( struct Map_info * Map )

Save category index to binary file (cidx)

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; 1 on error

Definition at line 478 of file Vlib/cindex.c.

References G_debug(), and GPATH_MAX.

◆ Vect_clean_small_angles_at_nodes()

int Vect_clean_small_angles_at_nodes	(	struct Map_info *	Map,
		int	otype,
		struct Map_info *	Err
	)

Clean small angles at nodes.

It may happen that even if the angle between 2 boundaries at node is very small, the calculated angle is 0 because of representation error. The map must be built at least on level GV_BUILD_BASE

Parameters

	Map	input map
	otype	feature type
[out]	Err	vector map where error line segments are written

Returns: number of line modifications

Definition at line 33 of file clean_nodes.c.

◆ Vect_close()

int Vect_close ( struct Map_info * Map )

Close vector map.

Parameters

Map	pointer to Map_info

Returns: 0 on success; non-zero on error

Definition at line 72 of file vector/Vlib/close.c.

References _, Plus_head::built, Format_info_pg::conninfo, Format_info_ogr::dsn, FALSE, Map_info::fInfo, Map_info::format, G_debug(), G_find_file2(), G_find_key_value(), G_fopen_old(), G_fread_key_value(), G_free(), G_mapset(), G_store(), G_strcasecmp(), G_warning(), GV_BUILD_ALL, GV_FORMAT_OGR, GV_FORMAT_POSTGIS, Map_info::level, Map_info::mapset, Map_info::name, Format_info::ogr, Format_info::pg, Map_info::plus, Map_info::support_updated, Map_info::temporary, TRUE, Vect_build(), Vect_close(), Vect_copy_head_data(), Vect_copy_map_dblinks(), Vect_copy_map_lines_field(), Vect_get_name(), Vect_hist_copy(), Vect_is_3d(), Vect_map_del_dblink(), and Vect_open_new().

Referenced by Vect_close().

◆ Vect_coor_info()

int Vect_coor_info	(	struct Map_info *	Map,
		struct Coor_info *	Info
	)

Update Coor_info structure.

Parameters

	Map	pointer to Map_info structure
[out]	Info	pointer to Coor_info structure

Returns: 1 on success; 0 on error

Definition at line 1009 of file vector/Vlib/open.c.

References _, Map_info::dig_fp, dig_fseek(), dig_ftell(), Map_info::format, G_debug(), G_warning(), GPATH_MAX, GV_COOR_ELEMENT, GV_FORMAT_NATIVE, GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, Coor_info::mtime, Map_info::open, Coor_info::size, Vect__get_element_path(), and VECT_OPEN_CODE.

Referenced by V1_close_nat(), V1_open_old_nat(), and Vect_open_topo().

◆ Vect_copy()

int Vect_copy	(	const char *	in,
		const char *	mapset,
		const char *	out
	)

Copy vector map including attribute tables.

Note: Output vector map is overwritten if exists!

Parameters

in	name if vector map to be copied
mapset	mapset name where the input map is located
out	name for output vector map (new map is created in current mapset)

Returns: -1 error; 0 success

Definition at line 125 of file map.c.

References _, G_debug(), G_fatal_error(), G_file_name(), G_find_vector2(), G_make_mapset_dir_object(), G_mapset(), G_name_is_fully_qualified(), G_warning(), GMAPSET_MAX, GNAME_MAX, GPATH_MAX, GV_CIDX_ELEMENT, GV_COOR_ELEMENT, GV_DIRECTORY, GV_FRMT_ELEMENT, GV_HEAD_ELEMENT, GV_HIST_ELEMENT, GV_SIDX_ELEMENT, GV_TOPO_ELEMENT, Map_info::mapset, NULL, Vect_delete(), and Vect_legal_filename().

Referenced by M_do_copy().

◆ Vect_copy_head_data()

int Vect_copy_head_data	(	struct Map_info *	from,
		struct Map_info *	to
	)

Copy header data from one to another map.

Parameters

	from	target vector map
[out]	to	destination vector map

Returns: 0

Definition at line 77 of file init_head.c.

References Vect_get_comment(), Vect_get_date(), Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), Vect_get_person(), Vect_get_scale(), Vect_get_thresh(), Vect_get_zone(), Vect_set_comment(), Vect_set_date(), Vect_set_map_date(), Vect_set_map_name(), Vect_set_organization(), Vect_set_person(), Vect_set_scale(), Vect_set_thresh(), and Vect_set_zone().

Referenced by Vect_close().

◆ Vect_copy_map_dblinks()

void Vect_copy_map_dblinks	(	struct Map_info *	In,
		struct Map_info *	Out,
		int	first_only
	)

Copy DB links from input vector map to output vector map.

Parameters

In	pointer to Map_info structure (input)
Out	pointer to Map_info structure (output)
first_only	TRUE to copy only first link otherwise all DB links are copied

Definition at line 205 of file field.c.

References _, field_info::database, field_info::driver, G_warning(), field_info::key, field_info::name, field_info::number, field_info::table, Vect_get_dblink(), Vect_get_num_dblinks(), and Vect_map_add_dblink().

Referenced by Vect_close().

◆ Vect_copy_map_lines()

int Vect_copy_map_lines	(	struct Map_info *	In,
		struct Map_info *	Out
	)

Copy all alive vector features from input vector map to output vector map.

Parameters

	In	input vector map
[out]	Out	output vector map

Returns: 0 on success; 1 on error

Definition at line 63 of file vector/Vlib/copy.c.

References Vect_copy_map_lines_field().

◆ Vect_copy_map_lines_field()

int Vect_copy_map_lines_field	(	struct Map_info *	In,
		int	field,
		struct Map_info *	Out
	)

Copy all alive vector features from given layer from input vector map to output vector map.

Note: Try to copy on level 2 otherwise level 1 is used.

Parameters

	In	input vector map
	field	layer number (-1 for all layers)
[out]	Out	output vector map

Returns: 0 on success; 1 on error

Definition at line 81 of file vector/Vlib/copy.c.

Referenced by Vect_close(), and Vect_copy_map_lines().

◆ Vect_copy_pnts_to_xyz()

int Vect_copy_pnts_to_xyz	(	const struct line_pnts *	Points,
		double *	x,
		double *	y,
		double *	z,
		int *	n
	)

Copy points from line structure to array.

x/y/z arrays MUST be at least as large as Points->n_points

Also note that n is a pointer to int.

Parameters

Points	pointer to line_pnts structure
x,y,z	coordinates arrays
n	number of points

Returns: number of points copied

Definition at line 380 of file line.c.

◆ Vect_copy_table()

int Vect_copy_table	(	struct Map_info *	In,
		struct Map_info *	Out,
		int	field_in,
		int	field_out,
		const char *	field_name,
		int	type
	)

Copy attribute table linked to vector map based on type.

Parameters

	In	input vector map
[out]	Out	output vector map
	field_in	input layer number
	field_out	output layer number
	field_name	layer name (can be NULL)
	type	how many tables are linked to map: GV_1TABLE / GV_MTABLE

Returns: 0 on success; -1 on error

Definition at line 664 of file vector/Vlib/copy.c.

◆ Vect_copy_table_by_cat_list()

int Vect_copy_table_by_cat_list	(	struct Map_info *	In,
		struct Map_info *	Out,
		int	field_in,
		int	field_out,
		const char *	field_name,
		int	type,
		const struct cat_list *	cat_list
	)

Copy attribute table linked to vector map based on category list.

If cat_list is NULL, then Vect_copy_table() is called.

Parameters

	In	input vector map
[out]	Out	output vector map
	field_in	input layer number
	field_out	output layer number
	field_name	layer name (can be NULL)
	type	how many tables are linked to map: GV_1TABLE / GV_MTABLE
	cat_list	pointer to cat_list struct (can be NULL)

Returns: 0 on success; -1 on error

Definition at line 688 of file vector/Vlib/copy.c.

◆ Vect_copy_table_by_cats()

int Vect_copy_table_by_cats	(	struct Map_info *	In,
		struct Map_info *	Out,
		int	field_in,
		int	field_out,
		const char *	field_name,
		int	type,
		int *	cats,
		int	ncats
	)

Copy attribute table linked to vector map based on category numbers.

Parameters

	In	input vector map
[out]	Out	output vector map
	field_in	input layer number
	field_out	output layer number
	field_name	layer name (can be NULL)
	type	how many tables are linked to map: GV_1TABLE / GV_MTABLE
	cats	pointer to array of cats or NULL
	ncats	number of cats in 'cats'

Returns: 0 on success; -1 on error

Definition at line 728 of file vector/Vlib/copy.c.

◆ Vect_copy_tables()

int Vect_copy_tables	(	struct Map_info *	In,
		struct Map_info *	Out,
		int	field
	)

Copy attribute tables linked to vector map.

Copy all attribute tables linked to the vector map if field is 0, or selected attribute table defined by given field if field > 0.

Notice, that if input vector map has no tables defined, it will copy nothing and return 0 (success).

Parameters

	In	input vector map
[out]	Out	output vector map
	field	layer number (0 for all tables linked to the vector map)

Returns: 0 on success; -1 on error

Definition at line 614 of file vector/Vlib/copy.c.

◆ Vect_copy_xyz_to_pnts()

int Vect_copy_xyz_to_pnts	(	struct line_pnts *	Points,
		const double *	x,
		const double *	y,
		const double *	z,
		int	n
	)

Copy points from array to line_pnts structure.

Parameters

Points	pointer to line_ptns structure
x,y,z	array of coordinates
n	number of points to be copied

Returns: 0 on success; -1 on out of memory

Definition at line 99 of file line.c.

◆ Vect_default_field_info()

struct field_info* Vect_default_field_info	(	struct Map_info *	Map,
		int	field,
		const char *	field_name,
		int	type
	)

Get default information about link to database for new dblink.

Parameters

Map	pointer to Map_info structure
field	layer number
field_name	layer name
type	how many tables are linked to map: GV_1TABLE / GV_MTABLE

Returns: pointer to allocated field_info structure

Definition at line 358 of file field.c.

◆ Vect_delete()

int Vect_delete ( const char * map )

Delete vector map including attribute tables.

Vector map must be located in current mapset.

Parameters

map	name of vector map to be delete

Returns: -1 error; 0 success

Definition at line 367 of file map.c.

References FALSE, and Vect__delete().

Referenced by M_do_remove(), and Vect_copy().

◆ Vect_delete_line()

int Vect_delete_line	(	struct Map_info *	Map,
		off_t	line
	)

Delete existing feature (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

A warning is printed on error.

Parameters

Map	pointer to Map_info structure
line	feature id (level 2) or feature offset (level 1)

Returns: 0 on success; -1 on error

Definition at line 275 of file vector/Vlib/write.c.

◆ Vect_destroy_boxlist()

void Vect_destroy_boxlist ( struct boxlist * list )

Frees all memory associated with a struct boxlist, including the struct itself.

Parameters

[in,out] list pointer to ilist structure

Definition at line 264 of file vector/Vlib/list.c.

References G_free(), and NULL.

◆ Vect_destroy_cat_list()

void Vect_destroy_cat_list ( struct cat_list * p )

Frees allocated cat_list memory.

Parameters

p	pointer to line_cats structure

Definition at line 327 of file vector/Vlib/cats.c.

References G_free(), cat_list::max, cat_list::min, and cat_list::n_ranges.

◆ Vect_destroy_cats_struct()

void Vect_destroy_cats_struct ( struct line_cats * p )

Frees all memory associated with line_cats structure, including the struct itself.

Parameters

p	line_cats structure

Definition at line 79 of file vector/Vlib/cats.c.

References line_cats::cat, line_cats::field, G_free(), and line_cats::n_cats.

Referenced by NetA_initialise_varray().

◆ Vect_destroy_field_info()

void Vect_destroy_field_info ( struct field_info * fi )

Free a struct field_info and all memory associated with it.

Parameters

[in,out] fi pointer to field_info structure

Definition at line 633 of file field.c.

References field_info::database, field_info::driver, G_free(), field_info::key, field_info::name, NULL, and field_info::table.

◆ Vect_destroy_line_struct()

void Vect_destroy_line_struct ( struct line_pnts * p )

Frees all memory associated with a line_pnts structure, including the structure itself.

Parameters

p	pointer to line_pnts structure

Definition at line 77 of file line.c.

References line_pnts::alloc_points, G_free(), line_pnts::x, line_pnts::y, and line_pnts::z.

Referenced by Vect__free_cache(), and vector2perimeters().

◆ Vect_destroy_list()

void Vect_destroy_list ( struct ilist * list )

Frees all memory associated with a struct ilist, including the struct itself.

Parameters

[in,out] list pointer to ilist structure

Definition at line 69 of file vector/Vlib/list.c.

References G_free(), and NULL.

◆ Vect_destroy_map_struct()

void Vect_destroy_map_struct ( struct Map_info * p )

Frees all memory associated with a Map_info structure, including the structure itself.

Parameters

p	pointer to Map_info structure

Definition at line 61 of file map.c.

References G_free().

◆ Vect_fidx_dump()

int Vect_fidx_dump	(	struct Map_info *	Map,
		FILE *	out
	)

Dump feature index to file.

Parameters

Map	pointer to Map_info struct
out	file for output (stdout/stderr for example)

Returns: 1 on success; 0 on error

Definition at line 750 of file build_sfa.c.

References _, Format_info_offset::array, Format_info_offset::array_num, Map_info::fInfo, Map_info::format, G_warning(), GV_FORMAT_OGR, GV_FORMAT_POSTGIS, Format_info_ogr::offset, Format_info_pg::offset, Format_info::ogr, Format_info::pg, Format_info_pg::toposchema_name, Vect_get_finfo_geometry_type(), Vect_get_num_lines(), Vect_maptype(), and Vect_maptype_info().

◆ Vect_field_cat_del()

int Vect_field_cat_del	(	struct line_cats *	Cats,
		int	field,
		int	cat
	)

Delete field/cat from line_cats structure.

Parameters

[in,out]	Cats	line_cats structure
	field	layer number
	cat	category to be deleted or -1 to delete all cats of given field

Returns: number of categories deleted; 0 field/category number does not exist

Definition at line 257 of file vector/Vlib/cats.c.

References line_cats::cat, line_cats::field, line_cats::n_cats, and Vect_cat_del().

◆ Vect_field_cat_get()

int Vect_field_cat_get	(	const struct line_cats *	Cats,
		int	field,
		struct ilist *	cats
	)

Get list of categories of given field.

Parameters

	Cats	line_cats structure
	field	layer number
[out]	cats	pointer to list where cats will be written

Returns: number of found categories; -1 on invalid field

Definition at line 192 of file vector/Vlib/cats.c.

References line_cats::cat, line_cats::field, GV_FIELD_MAX, line_cats::n_cats, ilist::n_values, Vect_list_append(), and Vect_reset_list().

◆ Vect_find_area()

int Vect_find_area	(	struct Map_info *	Map,
		double	x,
		double	y
	)

Find the nearest area.

Parameters

Map	vector map
x,y	point coordinates

Returns: area number; 0 if not found

Definition at line 258 of file vector/Vlib/find.c.

References bound_box::B, boxlist::box, bound_box::E, G_debug(), G_malloc, G_realloc, boxlist::id, bound_box::N, boxlist::n_values, NULL, Map_info::plus, PORT_DOUBLE_MAX, bound_box::S, bound_box::T, Vect_new_boxlist(), Vect_select_areas_by_box(), bound_box::W, and x.

◆ Vect_find_island()

int Vect_find_island	(	struct Map_info *	Map,
		double	x,
		double	y
	)

Find the nearest island.

Parameters

Map	vector map
x,y	points coordinates

Returns: island number,; 0 if not found

Definition at line 362 of file vector/Vlib/find.c.

◆ Vect_find_line()

int Vect_find_line	(	struct Map_info *	map,
		double	ux,
		double	uy,
		double	uz,
		int	type,
		double	maxdist,
		int	with_z,
		int	exclude
	)

Find the nearest line.

Parameters

map	vector map
ux,uy,uz	points coordinates
type	feature type (GV_LINE, GV_POINT, GV_BOUNDARY or GV_CENTROID) if only want to search certain types of lines or -1 if search all lines
maxdist	max distance from the line
with_z	3D (WITH_Z, WITHOUT_Z)
exclude	if > 0 number of line which should be excluded from selection. May be useful if we need line nearest to other one.

Returns: number of nearest line; 0 if not found

Definition at line 126 of file vector/Vlib/find.c.

◆ Vect_find_line_list()

int Vect_find_line_list	(	struct Map_info *	map,
		double	ux,
		double	uy,
		double	uz,
		int	type,
		double	maxdist,
		int	with_z,
		const struct ilist *	exclude,
		struct ilist *	found
	)

Find the nearest line(s).

Parameters

map	vector map
ux,uy,uz	points coordinates
type	feature type (GV_LINE, GV_POINT, GV_BOUNDARY or GV_CENTROID) if only want to search certain types of lines or -1 if search all lines
maxdist	max distance from the line
with_z	3D (WITH_Z, WITHOUT_Z)
exclude	list of lines which should be excluded from selection
found	list of found lines (or NULL)

Returns: number of nearest line; 0 if not found

Definition at line 159 of file vector/Vlib/find.c.

◆ Vect_find_node()

int Vect_find_node	(	struct Map_info *	Map,
		double	ux,
		double	uy,
		double	uz,
		double	maxdist,
		int	with_z
	)

Find the nearest node.

Parameters

Map	vector map
ux,uy,uz	point coordinates
maxdist	max distance from the line
with_z	3D (WITH_Z, WITHOUT_Z)

Returns: number of nearest node; 0 if not found

Definition at line 56 of file vector/Vlib/find.c.

References bound_box::B, bound_box::E, G_debug(), HUGE_VAL, bound_box::N, PORT_DOUBLE_MAX, bound_box::S, bound_box::T, ilist::value, Vect_get_node_coor(), Vect_new_list(), Vect_points_distance(), Vect_select_nodes_by_box(), bound_box::W, and x.

◆ Vect_find_poly_centroid()

int Vect_find_poly_centroid	(	const struct line_pnts *	points,
		double *	cent_x,
		double *	cent_y
	)

Get centroid of polygon.

Parameters

	points	polygon
[out]	cent_x,cent_y	centroid coordinates

Returns: 0 on success; -1 on error

Definition at line 355 of file Vlib/poly.c.

References line_pnts::n_points, line_pnts::x, and line_pnts::y.

◆ Vect_get_area_area()

double Vect_get_area_area	(	struct Map_info *	Map,
		int	area
	)

Returns area of area without areas of isles.

Parameters

Map	pointer to Map_info structure
area	area id

Returns: area of area without areas of isles

Definition at line 375 of file vector/Vlib/area.c.

◆ Vect_get_area_boundaries()

int Vect_get_area_boundaries	(	struct Map_info *	Map,
		int	area,
		struct ilist *	List
	)

Creates list of boundaries for given area.

Note that ids in List can be negative. The sign indicates in which direction the boundary should be read (negative for backward).

Parameters

	Map	pointer to Map_info structure
	area	area id
[out]	List	pointer to list of boundaries

Returns: number of boundaries

Definition at line 139 of file vector/Vlib/area.c.

◆ Vect_get_area_box()

int Vect_get_area_box	(	struct Map_info *	Map,
		int	area,
		struct bound_box *	Box
	)

Get bounding box of area.

Vector map must be open at topological level and built with level >= GV_BUILD_AREAS.

Parameters

	Map	vector map
	area	area id
[out]	Box	bounding box

Returns: 1 on success; 0 area is dead; -1 on error

Definition at line 300 of file vector/Vlib/box.c.

References _, Plus_head::Area, Box, dig_find_area_box(), G_warning(), Plus_head::n_areas, NULL, Map_info::plus, PORT_DOUBLE_MAX, and Vect_is_3d().

Referenced by Vect__insert_face_pg(), and Vect_attach_isles().

◆ Vect_get_area_cat()

int Vect_get_area_cat	(	struct Map_info *	Map,
		int	area,
		int	field
	)

Find FIRST category of given field and area.

Parameters

Map	pointer to Map_info structure
area	area id
field	layer number

Returns: first found category of given field; -1 no centroid or no category found

Definition at line 450 of file vector/Vlib/area.c.

References line_cats::cat, line_cats::field, line_cats::n_cats, NULL, Vect_get_area_cats(), Vect_new_cats_struct(), and Vect_reset_cats().

Referenced by vector2perimeters(), and Vedit_delete_areas_cat().

◆ Vect_get_area_cats()

int Vect_get_area_cats	(	struct Map_info *	Map,
		int	area,
		struct line_cats *	Cats
	)

Get area categories.

Parameters

	Map	pointer to Map_info structure
	area	area id
[out]	Cats	list of categories

Returns: 0 centroid found (but may be without categories); 1 no centroid found

Definition at line 423 of file vector/Vlib/area.c.

References NULL, Vect_get_area_centroid(), Vect_read_line(), and Vect_reset_cats().

Referenced by Vect_get_area_cat().

◆ Vect_get_area_centroid()

int Vect_get_area_centroid	(	struct Map_info *	Map,
		int	area
	)

Returns centroid id for given area.

Parameters

Map	pointer to Map_info structure
area	area id

Returns: centroid id of area; 0 if no centroid found

Definition at line 110 of file vector/Vlib/area.c.

References _, Plus_head::Area, P_area::centroid, G_debug(), G_fatal_error(), NULL, and Map_info::plus.

Referenced by Vect_get_area_cats().

◆ Vect_get_area_isle()

int Vect_get_area_isle	(	struct Map_info *	Map,
		int	area,
		int	isle
	)

Returns isle id for area.

Parameters

Map	pointer to Map_info structure
area	area id
isle	isle index (0 .. nisles - 1)

Returns: isle id; 0 if no isle found

Definition at line 236 of file vector/Vlib/area.c.

References _, Plus_head::Area, G_debug(), G_fatal_error(), P_area::isles, NULL, and Map_info::plus.

◆ Vect_get_area_num_isles()

int Vect_get_area_num_isles	(	struct Map_info *	Map,
		int	area
	)

Returns number of isles for given area.

Parameters

Map	pointer to Map_info structure
area	area id

Returns: number of isles for area; 0 if area not found

Definition at line 208 of file vector/Vlib/area.c.

References _, Plus_head::Area, G_debug(), G_fatal_error(), P_area::n_isles, NULL, and Map_info::plus.

◆ Vect_get_area_perimeter()

double Vect_get_area_perimeter	(	struct Map_info *	Map,
		int	area
	)

Returns perimeter of area with perimeter of isles.

Parameters

Map	pointer to Map_info structure
area	area id

Returns: perimeter of area with perimeters of isles in meters

Definition at line 290 of file vector/Vlib/area.c.

◆ Vect_get_area_points()

int Vect_get_area_points	(	struct Map_info *	Map,
		int	area,
		struct line_pnts *	BPoints
	)

Returns polygon array of points (outer ring) of given area.

Parameters

	Map	pointer to Map_info structure
	area	area id
[out]	BPoints	points array

Returns: number of points; -1 on error

Definition at line 37 of file vector/Vlib/area.c.

References _, Plus_head::Area, G_debug(), G_warning(), P_area::lines, P_area::n_lines, NULL, Map_info::plus, Vect__get_area_points(), and Vect_reset_line().

Referenced by vector2perimeters().

◆ Vect_get_area_points_geos()

GEOSCoordSequence* Vect_get_area_points_geos	(	struct Map_info *	Map,
		int	area
	)

Returns the polygon array of points, i.e. outer ring (shell)

You should free allocated memory by GEOSCoordSeq_destroy().

◆ Vect_get_built()

int Vect_get_built ( struct Map_info * Map )

Return current highest built level (part)

Parameters

Map	vector map

Returns: current highest built level

Definition at line 757 of file build.c.

References Plus_head::built, and Map_info::plus.

◆ Vect_get_centroid_area()

int Vect_get_centroid_area	(	struct Map_info *	Map,
		int	centroid
	)

Get area id the centroid is within.

Parameters

Map	pointer to Map_info struct
centroid	centroid id

Returns: area id the centroid is within; 0 for not in area; negative id if centroid is duplicated in the area

Definition at line 429 of file level_two.c.

Referenced by Vedit_delete_area_centroid().

◆ Vect_get_column_names()

const char* Vect_get_column_names	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column names of vector map attribute table.

Parameters

Map	vector map
field	layer number

Returns: list of column(s) names on success; NULL on error

Definition at line 37 of file dbcolumns.c.

◆ Vect_get_column_names_types()

const char* Vect_get_column_names_types	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column names and types of vector map attribute table.

Parameters

Map	vector map
field	layer number

Returns: list of column(s) types on success; NULL on error

Definition at line 149 of file dbcolumns.c.

◆ Vect_get_column_types()

const char* Vect_get_column_types	(	struct Map_info *	Map,
		int	field
	)

Fetches list of DB column types of vector map attribute table.

Parameters

Map	vector map
field	layer number

Returns: list of column(s) types on success; NULL on error

Definition at line 92 of file dbcolumns.c.

◆ Vect_get_comment()

const char* Vect_get_comment ( struct Map_info * Map )

Get comment or other info string from map header.

Parameters

Map	pointer to Map_info structure

Returns: comment or other info string

Definition at line 453 of file vector/Vlib/header.c.

References dig_head::comment, and Map_info::head.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_constraint_box()

int Vect_get_constraint_box	(	struct Map_info *	Map,
		struct bound_box *	Box
	)

Get constraint box.

Constraint box can be defined by Vect_set_constraint_region().

Parameters

	Map	vector map
[out]	Box	bounding box

Returns: 0 on success; -1 no region constraint defined

Definition at line 79 of file constraint.c.

References bound_box::B, Map_info::box, Box, Map_info::constraint, bound_box::E, bound_box::N, Map_info::region_flag, bound_box::S, bound_box::T, and bound_box::W.

Referenced by V1_read_next_line_nat().

◆ Vect_get_date()

const char* Vect_get_date ( struct Map_info * Map )

Get date of digitization from map header.

Parameters

Map	pointer to Map_info structure

Returns: date of digitization string

Definition at line 314 of file vector/Vlib/header.c.

References dig_head::date, and Map_info::head.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_dblink()

struct field_info* Vect_get_dblink	(	struct Map_info *	Map,
		int	link
	)

Get information about link to database.

Variables are substituted by values, link is index to array of dblinks.

Parameters

Map	pointer to Map_info structure
link	link id

Returns: pointer to new field_info structure

Definition at line 475 of file field.c.

References _, field_info::database, Map_info::dblnk, field_info::driver, dblinks::field, G_debug(), G_malloc, G_store(), G_warning(), field_info::key, dblinks::n_fields, field_info::name, NULL, field_info::number, field_info::table, and Vect_subst_var().

Referenced by Vect_copy_map_dblinks(), Vect_get_field(), Vect_get_field2(), and Vect_get_field_by_name().

◆ Vect_get_field()

struct field_info* Vect_get_field	(	struct Map_info *	Map,
		int	field
	)

Get information about link to database (by layer number)

Variables are substituted by values, field is number of requested field.

Parameters

Map	pointer to Map_info structure
field	layer number

Returns: pointer to new field_info structure; NULL if not found

Definition at line 515 of file field.c.

References Map_info::dblnk, dblinks::field, G_debug(), dblinks::n_fields, NULL, field_info::number, and Vect_get_dblink().

Referenced by Vect_cats_set_constraint(), and Vect_get_field2().

◆ Vect_get_field2()

struct field_info* Vect_get_field2	(	struct Map_info *	Map,
		const char *	field
	)

Get information about link to database (by layer number or layer name)

Note: if field is -1 then the function returns the first dblink or NULL

Parameters

Map	pointer to Map_info structure
field	layer number or name

Returns: pointer to new field_info structure; NULL if not found

Definition at line 571 of file field.c.

References G_debug(), NULL, Vect_get_dblink(), Vect_get_field(), Vect_get_field_by_name(), and Vect_get_num_dblinks().

Referenced by Vect_get_field_number().

◆ Vect_get_field_by_name()

struct field_info* Vect_get_field_by_name	(	struct Map_info *	Map,
		const char *	field
	)

Get information about link to database (by layer name)

Parameters

Map	pointer to Map_info structure
field	layer name

Returns: pointer to new field_info structure; NULL if not found

Definition at line 541 of file field.c.

References Map_info::dblnk, dblinks::field, G_debug(), dblinks::n_fields, field_info::name, NULL, and Vect_get_dblink().

Referenced by Vect_get_field2().

◆ Vect_get_field_number()

int Vect_get_field_number	(	struct Map_info *	Map,
		const char *	field
	)

Get field number of given field.

Parameters

Map	pointer to Map_info structure
field	layer name

Returns: layer number; -1 for all layers; 0 if layer not found

Definition at line 608 of file field.c.

References G_debug(), field_info::number, Vect_get_field2(), and Vect_get_num_dblinks().

Referenced by vector2perimeters().

◆ Vect_get_finfo()

const struct Format_info* Vect_get_finfo ( struct Map_info * Map )

Get header info for non-native formats.

Parameters

Map	pointer to Map_info structure

Returns: pointer to Format_info structure; NULL for native format

Definition at line 224 of file header_finfo.c.

References Format_info_pg::conninfo, Format_info_ogr::driver_name, Map_info::fInfo, NULL, Format_info::ogr, and Format_info::pg.

◆ Vect_get_finfo_dsn_name()

const char* Vect_get_finfo_dsn_name ( struct Map_info * Map )

Get datasource name (relevant only for non-native formats)

Returns:

datasource name for OGR format (GV_FORMAT_OGR and GV_FORMAT_OGR_DIRECT)
database name for PostGIS format (GV_FORMAT_POSTGIS)

Parameters

Map	pointer to Map_info structure

Returns: string containing OGR/PostGIS datasource name; NULL on error (map format is native)

Definition at line 37 of file header_finfo.c.

References _, Format_info_pg::db_name, Format_info_ogr::dsn, Map_info::fInfo, Map_info::format, G_debug(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, NULL, Format_info::ogr, Format_info::pg, and Vect_get_full_name().

◆ Vect_get_finfo_format_info()

const char* Vect_get_finfo_format_info ( struct Map_info * Map )

Get format info as string (relevant only for non-native formats)

Parameters

Map	pointer to Map_info structure

Returns: string containing name of OGR format; "PostgreSQL" for PostGIS format (GV_FORMAT_POSTGIS); NULL on error (or on missing OGR/PostgreSQL support)

Definition at line 108 of file header_finfo.c.

References _, Format_info_ogr::ds, Map_info::fInfo, Map_info::format, G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, NULL, and Format_info::ogr.

Referenced by Vect_build_ogr(), and Vect_build_pg().

◆ Vect_get_finfo_geometry_type()

const char* Vect_get_finfo_geometry_type ( struct Map_info * Map )

Get geometry type as string (relevant only for non-native formats)

Note: All inner spaces are removed, function returns feature type in lowercase.

Parameters

Map	pointer to Map_info structure

Returns: allocated string containing geometry type info (point, linestring, polygon, ...); NULL on error (map format is native)

Definition at line 143 of file header_finfo.c.

References _, Format_info_pg::conn, DB_SQL_MAX, Map_info::fInfo, Map_info::format, G_debug(), G_free(), G_malloc, G_store(), G_str_replace(), G_str_to_lower(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, Format_info_ogr::layer, NULL, Format_info::ogr, Format_info::pg, Format_info_pg::res, Format_info_pg::schema_name, and Format_info_pg::table_name.

Referenced by Vect_build_ogr(), Vect_build_pg(), and Vect_fidx_dump().

◆ Vect_get_finfo_layer_name()

char* Vect_get_finfo_layer_name ( struct Map_info * Map )

Get layer name (relevant only for non-native formats)

Returns:

layer name for OGR format (GV_FORMAT_OGR and GV_FORMAT_OGR_DIRECT)
table name for PostGIS format (GV_FORMAT_POSTGIS) including schema (<schema>.<table>)

Note: allocated string should be freed by G_free()

Parameters

Map	pointer to Map_info structure

Returns: string containing layer name; NULL on error (map format is native)

Definition at line 73 of file header_finfo.c.

References _, Map_info::fInfo, Map_info::format, G_asprintf(), G_debug(), G_store(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, Format_info_ogr::layer_name, name, NULL, Format_info::ogr, Format_info::pg, Format_info_pg::schema_name, Format_info_pg::table_name, and Vect_get_full_name().

◆ Vect_get_finfo_topology_info()

int Vect_get_finfo_topology_info	(	struct Map_info *	Map,
		char **	toposchema,
		char **	topogeom,
		int *	topo_geo_only
	)

Get topology type (relevant only for non-native formats)

Parameters

	Map	pointer to Map_info structure
[out]	toposchema	Topology schema name or NULL
[out]	topogeom	TopoGeometry column name or NULL
[out]	topo_geo_only	TRUE for Topo-Geo data model or NULL

Returns: GV_TOPO_NATIVE for native format; GV_TOPO_PSEUDO for pseudo-topology; GV_TOPO_POSTGIS for PostGIS Topology

Definition at line 247 of file header_finfo.c.

References _, Map_info::fInfo, Map_info::format, G_store(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, GV_TOPO_NATIVE, GV_TOPO_POSTGIS, GV_TOPO_PSEUDO, Format_info::pg, Format_info_pg::topo_geo_only, Format_info_pg::topogeom_column, and Format_info_pg::toposchema_name.

◆ Vect_get_full_name()

const char* Vect_get_full_name ( struct Map_info * Map )

Get fully qualified name of vector map.

for GV_FORMAT_NATIVE and GV_FORMAT_OGR returns "map@mapset"
for GV_FORMAT_OGR_DIRECT returns "layer@datasourse"

Allocated string should be freed by G_free().

Parameters

Map	pointer to Map_info structure

Returns: allocated string "name@mapset"

Definition at line 221 of file vector/Vlib/header.c.

References Format_info_ogr::dsn, Map_info::fInfo, Map_info::format, G_malloc, GV_FORMAT_OGR_DIRECT, Format_info_ogr::layer_name, Map_info::mapset, Map_info::name, and Format_info::ogr.

Referenced by V1_open_old_nat(), V2_open_old_ogr(), V2_open_old_pg(), Vect__read_head(), Vect__write_head(), Vect_build_partial(), Vect_build_sidx_from_topo(), Vect_cidx_open(), Vect_get_finfo_dsn_name(), Vect_get_finfo_layer_name(), Vect_open_fidx(), and Vect_sfa_get_num_features().

◆ Vect_get_isle_area()

int Vect_get_isle_area	(	struct Map_info *	Map,
		int	isle
	)

Returns area id for isle.

Parameters

Map	vector
isle	isle number (0 .. nisles - 1)

Returns: area id; 0 area not found

Definition at line 263 of file vector/Vlib/area.c.

References _, P_isle::area, G_debug(), G_fatal_error(), Plus_head::Isle, NULL, and Map_info::plus.

◆ Vect_get_isle_boundaries()

int Vect_get_isle_boundaries	(	struct Map_info *	Map,
		int	isle,
		struct ilist *	List
	)

Creates list of boundaries for given isle.

Note that ids in List can be negative. The sign indicates in which direction the boundary should be read (negative for forward).

Parameters

	Map	pointer to Map_info structure
	isle	island number
[out]	List	pointer to list where boundaries are stored

Returns: number of boundaries

Definition at line 175 of file vector/Vlib/area.c.

◆ Vect_get_isle_box()

int Vect_get_isle_box	(	struct Map_info *	Map,
		int	isle,
		struct bound_box *	Box
	)

Get bounding box of isle.

Vector map must be open at topological level and built with level >= GV_BUILD_AREAS.

Parameters

	Map	vector map
	isle	isle id
[out]	Box	bounding box

Returns: 1 on success; 0 isle is dead / bounding box not found; -1 on error

Definition at line 345 of file vector/Vlib/box.c.

References _, Box, dig_find_isle_box(), G_warning(), Plus_head::Isle, Plus_head::n_isles, NULL, Map_info::plus, PORT_DOUBLE_MAX, and Vect_is_3d().

Referenced by Vect__insert_face_pg().

◆ Vect_get_isle_points()

int Vect_get_isle_points	(	struct Map_info *	Map,
		int	isle,
		struct line_pnts *	BPoints
	)

Returns polygon array of points for given isle.

Parameters

	Map	pointer to Map_info structure
	isle	island id
[out]	BPoints	points array

Returns: number of points; -1 on error

Definition at line 68 of file vector/Vlib/area.c.

References _, Format_info_pg::cache, Format_info_cache::ctype, Map_info::fInfo, Map_info::format, G_debug(), G_fatal_error(), G_warning(), GV_FORMAT_POSTGIS, Plus_head::Isle, P_isle::lines, P_isle::n_lines, NULL, Format_info::pg, Map_info::plus, Format_info_pg::toposchema_name, Vect__get_area_points_nat(), Vect__get_area_points_pg(), and Vect_reset_line().

◆ Vect_get_isle_points_geos()

GEOSCoordSequence* Vect_get_isle_points_geos	(	struct Map_info *	Map,
		int	isle
	)

Returns the polygon (isle) array of points (inner ring)

You should free allocated memory by GEOSCoordSeq_destroy().

◆ Vect_get_line_areas()

int Vect_get_line_areas	(	struct Map_info *	Map,
		int	line,
		int *	left,
		int *	right
	)

Get area id on the left and right side of the boundary.

Negative area id indicates an isle.

Parameters

	Map	pointer to Map_info struct
	line	line id
[out]	left,right	area id on the left and right side

Returns: 1 on success; -1 on failure (topology not available, line is not a boundary)

Definition at line 346 of file level_two.c.

◆ Vect_get_line_box()

int Vect_get_line_box	(	struct Map_info *	Map,
		int	line,
		struct bound_box *	Box
	)

Get bounding box of given feature.

Vector map must be open at topological level and built with level >= GV_BUILD_BASE.

Parameters

	Map	vector map
	line	feature id
[out]	Box	bounding box

Returns: 1 on success; 0 line is dead; -1 on error

Definition at line 235 of file vector/Vlib/box.c.

◆ Vect_get_line_cat()

int Vect_get_line_cat	(	struct Map_info *	Map,
		int	line,
		int	field
	)

Fetches FIRST category number for given vector line and field.

Parameters

Map	pointer to Map_info structure
line	line id
field	layer number

Returns: -1 no category; category number (>=0)

Definition at line 929 of file line.c.

◆ Vect_get_line_nodes()

int Vect_get_line_nodes	(	struct Map_info *	Map,
		int	line,
		int *	n1,
		int *	n2
	)

Get line nodes.

Parameters

Map	pointer to Map_info struct
line	line id
n1	(start node), n2 (end node) ids of line nodes (or NULL)

Returns: 1

Definition at line 303 of file level_two.c.

◆ Vect_get_line_offset()

off_t Vect_get_line_offset	(	struct Map_info *	Map,
		int	line
	)

Get feature offset (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

Used for Vect_restore_line().

Parameters

Map	pointer to Map_info structure
line	feature id

Returns: feature offset; -1 on error

Definition at line 303 of file vector/Vlib/read.c.

◆ Vect_get_line_type()

int Vect_get_line_type	(	struct Map_info *	Map,
		int	line
	)

Get line type.

Parameters

Map	pointer to Map_info struct
line	line id

Returns: line type

Definition at line 254 of file level_two.c.

◆ Vect_get_map_box()

int Vect_get_map_box	(	struct Map_info *	Map,
		struct bound_box *	Box
	)

Get bounding box of map (all features in the map)

Requires level 2. On level 1 error code is returned.

Parameters

	Map	vector map
[out]	Box	bounding box

Returns: 1 on success; 0 on error

Definition at line 388 of file vector/Vlib/box.c.

References Plus_head::box, Box, Map_info::plus, Vect_box_copy(), and Vect_level().

◆ Vect_get_map_box1()

int Vect_get_map_box1	(	struct Map_info *	Map,
		struct bound_box *	Box
	)

Get bounding box of map on level 1 (all features in the map)

This subroutine determines bounding box by reading all features sequentially.

Parameters

	Map	vector map
[out]	Box	bounding box

Returns: 1 on success; 0 on error

Definition at line 413 of file vector/Vlib/box.c.

◆ Vect_get_map_date()

const char* Vect_get_map_date ( struct Map_info * Map )

Get date when the source map was originally produced from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing a date

Definition at line 398 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::source_date.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_map_name()

const char* Vect_get_map_name ( struct Map_info * Map )

Get map name from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing map name

Definition at line 370 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::map_name.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_mapset()

const char* Vect_get_mapset ( struct Map_info * Map )

Get name of mapset where vector map lives.

Parameters

Map	pointer to Map_info structure

Returns: string containing mapset name

Definition at line 204 of file vector/Vlib/header.c.

References Map_info::mapset.

◆ Vect_get_name()

const char* Vect_get_name ( struct Map_info * Map )

Get name of vector map.

Parameters

Map	pointer to Map_info structure

Returns: string containing name

Definition at line 192 of file vector/Vlib/header.c.

References Map_info::name.

Referenced by Vect_close(), Vect_save_sidx(), and Vect_write_dblinks().

◆ Vect_get_next_line_id()

int Vect_get_next_line_id ( struct Map_info * Map )

Get line id for sequential reading.

This function returns id of feature which has been read by calling Vect_read_next_line().

Parameters

Map	pointer to Map_info struct

Returns: feature id; -1 on error

Definition at line 97 of file vector/Vlib/read.c.

References _, G_debug(), G_warning(), Map_info::next_line, and VECT_OPEN.

◆ Vect_get_node_coor()

int Vect_get_node_coor	(	struct Map_info *	Map,
		int	num,
		double *	x,
		double *	y,
		double *	z
	)

Get node coordinates.

Parameters

	Map	pointer to Map_info struct
	num	node id (starts at 1)
[out]	x,y,z	coordinates values (for 2D coordinates z is NULL)

Returns: 0 on success; -1 on error

Definition at line 274 of file level_two.c.

References _, G_warning(), Plus_head::n_nodes, Plus_head::Node, NULL, Map_info::plus, P_node::x, x, P_node::y, and P_node::z.

Referenced by Vect_find_node().

◆ Vect_get_node_line()

int Vect_get_node_line	(	struct Map_info *	Map,
		int	node,
		int	line
	)

Get line id for node line index.

Parameters

Map	pointer to Map_info struct
node	node id
line	line index (range: 0 - Vect_get_node_n_lines())

Returns: line id

Definition at line 396 of file level_two.c.

◆ Vect_get_node_line_angle()

float Vect_get_node_line_angle	(	struct Map_info *	Map,
		int	node,
		int	line
	)

Angle of segment of the line connected to the node.

Parameters

Map	pointer to Map_info struct
node	node number
line	line index (range: 0 - Vect_get_node_n_lines())

Returns: angle of segment of the line connected to the node

Definition at line 412 of file level_two.c.

◆ Vect_get_node_n_lines()

int Vect_get_node_n_lines	(	struct Map_info *	Map,
		int	node
	)

Get number of lines for node.

Parameters

Map	pointer to Map_info struct
node	node id

Returns: numbers of lines

Definition at line 380 of file level_two.c.

◆ Vect_get_num_areas()

plus_t Vect_get_num_areas ( struct Map_info * Map )

Get number of areas in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of areas

Definition at line 87 of file level_two.c.

References Plus_head::n_areas, and Map_info::plus.

Referenced by vector2perimeters(), and Vedit_delete_areas_cat().

◆ Vect_get_num_dblinks()

int Vect_get_num_dblinks ( struct Map_info * Map )

Get number of defined dblinks.

Parameters

Map	pointer to Map_info struct

Returns: number of dblinks

Definition at line 159 of file level_two.c.

References Map_info::dblnk, and dblinks::n_fields.

Referenced by Vect_copy_map_dblinks(), Vect_get_field2(), and Vect_get_field_number().

◆ Vect_get_num_faces()

plus_t Vect_get_num_faces ( struct Map_info * Map )

Get number of faces in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of faces

Definition at line 111 of file level_two.c.

References Plus_head::n_flines, and Map_info::plus.

◆ Vect_get_num_holes()

plus_t Vect_get_num_holes ( struct Map_info * Map )

Fetch number of holes in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of holes

Definition at line 147 of file level_two.c.

References Plus_head::n_holes, and Map_info::plus.

◆ Vect_get_num_islands()

plus_t Vect_get_num_islands ( struct Map_info * Map )

Get number of islands in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of islands

Definition at line 135 of file level_two.c.

References Plus_head::n_isles, and Map_info::plus.

◆ Vect_get_num_kernels()

plus_t Vect_get_num_kernels ( struct Map_info * Map )

Fetch number of kernels in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of kernels

Definition at line 99 of file level_two.c.

References Plus_head::n_klines, and Map_info::plus.

◆ Vect_get_num_line_points()

int Vect_get_num_line_points ( const struct line_pnts * Points )

Get number of line points.

Parameters

Points pointer to line_pnts structure

Returns: number of points

Definition at line 267 of file line.c.

◆ Vect_get_num_lines()

plus_t Vect_get_num_lines ( struct Map_info * Map )

Fetch number of features (points, lines, boundaries, centroids) in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of features

Definition at line 75 of file level_two.c.

References Plus_head::n_lines, and Map_info::plus.

Referenced by NetA_initialise_varray(), and Vect_fidx_dump().

◆ Vect_get_num_nodes()

plus_t Vect_get_num_nodes ( struct Map_info * Map )

Get number of nodes in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of nodes

Definition at line 34 of file level_two.c.

References Plus_head::n_nodes, and Map_info::plus.

◆ Vect_get_num_primitives()

plus_t Vect_get_num_primitives	(	struct Map_info *	Map,
		int	type
	)

Get number of primitives in vector map.

Parameters

Map	pointer to Map_info struct
type	feature type

Returns: number of primitives

Definition at line 47 of file level_two.c.

◆ Vect_get_num_updated_lines()

int Vect_get_num_updated_lines ( struct Map_info * Map )

Get number of updated features.

Note: Vect_set_updated() must be called to maintain list of updated features

Parameters

Map	pointer to Map_info struct

Returns: number of updated features

Definition at line 175 of file level_two.c.

References Plus_head::n_uplines, Map_info::plus, and Plus_head::uplist.

◆ Vect_get_num_updated_nodes()

int Vect_get_num_updated_nodes ( struct Map_info * Map )

Get number of updated nodes.

Parameters

Map	pointer to Map_info struct

Returns: number of updated nodes

Definition at line 219 of file level_two.c.

References Plus_head::n_upnodes, Map_info::plus, and Plus_head::uplist.

◆ Vect_get_num_volumes()

plus_t Vect_get_num_volumes ( struct Map_info * Map )

Fetch number of volumes in vector map.

Parameters

Map	pointer to Map_info struct

Returns: number of volumes

Definition at line 123 of file level_two.c.

References Plus_head::n_volumes, and Map_info::plus.

◆ Vect_get_organization()

const char* Vect_get_organization ( struct Map_info * Map )

Get organization string from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing organization name

Definition at line 283 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::organization.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_person()

const char* Vect_get_person ( struct Map_info * Map )

Get user name string who digitized the map from map header.

Parameters

Map	pointer to Map_info structure

Returns: string containing user name

Definition at line 342 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::user_name.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_point_in_area()

int Vect_get_point_in_area	(	struct Map_info *	Map,
		int	area,
		double *	X,
		double *	Y
	)

Get point inside area and outside all islands.

Take a line and intersect it with the polygon and any islands. sort the list of X values from these intersections. This will be a list of segments alternating IN/OUT/IN/OUT of the polygon. Pick the largest IN segment and take the midpoint.

Parameters

	Map	vector map
	area	area id
[out]	X,Y	point coordinateds

Returns: 0 on success; -1 on error

Definition at line 55 of file Vlib/poly.c.

◆ Vect_get_point_in_poly()

int Vect_get_point_in_poly	(	const struct line_pnts *	Points,
		double *	X,
		double *	Y
	)

Get point inside polygon.

This does NOT consider ISLANDS!

Parameters

	Points	polygon
[out]	X,Y	point coordinates

Returns: 0 on success; -1 on error

Definition at line 208 of file Vlib/poly.c.

◆ Vect_get_point_in_poly_isl()

int Vect_get_point_in_poly_isl	(	const struct line_pnts *	Points,
		const struct line_pnts **	IPoints,
		int	n_isles,
		double *	att_x,
		double *	att_y
	)

Get point inside polygon but outside the islands specifiled in IPoints.

Take a line and intersect it with the polygon and any islands. sort the list of X values from these intersections. This will be a list of segments alternating IN/OUT/IN/OUT of the polygon. Pick the largest IN segment and take the midpoint.

Parameters

	Points	polygon (boundary)
	IPoints	isles (list of isle boundaries)
	n_isles	number of isles
[out]	att_x,att_y	point coordinates

Returns: 0 on success; -1 on error

Definition at line 449 of file Vlib/poly.c.

◆ Vect_get_proj()

int Vect_get_proj ( struct Map_info * Map )

Get projection from map header.

Parameters

Map	pointer to Map_info structure

Returns: PROJECTION_XY 0 - x,y (Raw imagery),; PROJECTION_UTM 1 - UTM Universal Transverse Mercator,; PROJECTION_LL 3 - Latitude-Longitude

Definition at line 519 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::proj.

Referenced by Vect__write_head(), and Vect_get_proj_name().

◆ Vect_get_proj_name()

const char* Vect_get_proj_name ( struct Map_info * Map )

Query cartographic projection name of pointer to Map_info structure.

Returns a pointer to a string which is a printable name for projection code proj (as returned by Vect_get_proj()).

Parameters

Map	pointer to Map_info structure

Returns: allocated string containing projection name; NULL if proj is not a valid projection

Definition at line 536 of file vector/Vlib/header.c.

References _, G_database_projection_name(), G_debug(), G_projection_name(), G_store(), name, PROJECTION_LL, PROJECTION_OTHER, PROJECTION_UTM, PROJECTION_XY, strcpy, and Vect_get_proj().

◆ Vect_get_scale()

int Vect_get_scale ( struct Map_info * Map )

Get map scale from map header.

Parameters

Map	pointer to Map_info structure

Returns: map scale

Definition at line 425 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::orig_scale.

Referenced by Vect__write_head(), Vect_copy_head_data(), Vect_print_header(), and Vect_write_ascii_head().

◆ Vect_get_thresh()

double Vect_get_thresh ( struct Map_info * Map )

Get threshold used for digitization from map header.

Parameters

Map	pointer to Map_info structure

Returns: threshold used for digitization

Definition at line 585 of file vector/Vlib/header.c.

References dig_head::digit_thresh, and Map_info::head.

Referenced by Vect__write_head(), Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_get_updated_line()

int Vect_get_updated_line	(	struct Map_info *	Map,
		int	idx
	)

Get updated line by index.

Note: Vect_set_updated() must be called to maintain list of updated features

Parameters

Map	pointer to Map_info struct
idx	index

Returns: updated line

Definition at line 191 of file level_two.c.

References Map_info::plus, Plus_head::uplines, and Plus_head::uplist.

◆ Vect_get_updated_line_offset()

off_t Vect_get_updated_line_offset	(	struct Map_info *	Map,
		int	idx
	)

Get updated line offset by index.

Note: Vect_set_updated() must be called to maintain list of updated features

Parameters

Map	pointer to Map_info struct
idx	index

Returns: updated line

Definition at line 207 of file level_two.c.

References Map_info::plus, Plus_head::uplines_offset, and Plus_head::uplist.

◆ Vect_get_updated_node()

int Vect_get_updated_node	(	struct Map_info *	Map,
		int	idx
	)

Get updated (modified) node by index.

Note: Vect_set_updated() must be called to maintain list of updated features

Negative id:

if Node[id] is not NULL then the node was added
if Node[id] is NULL then the node was deleted Positive id:
node was updated

Parameters

Map	pointer to Map_info struct
idx	index

Returns: id of modified node

Definition at line 241 of file level_two.c.

References Map_info::plus, Plus_head::uplist, and Plus_head::upnodes.

◆ Vect_get_zone()

int Vect_get_zone ( struct Map_info * )

Referenced by Vect_copy_head_data(), and Vect_write_ascii_head().

◆ Vect_graph_add_edge()

void Vect_graph_add_edge	(	dglGraph_s *	graph,
		int	from,
		int	to,
		double	costs,
		int	id
	)

Add edge to graph.

Internal format for edge costs is integer, costs are multiplied before conversion to int by 1000. Costs -1 for infinity i.e. arc or node is closed and cannot be traversed.

Parameters

graph	pointer to graph structure
from	from node
to	to node
costs	costs value
id	edge id

Returns: void

Definition at line 124 of file vector/Vlib/graph.c.

References _, dglAddEdge(), G_debug(), and G_fatal_error().

◆ Vect_graph_build()

void Vect_graph_build ( dglGraph_s * graph )

Build network graph.

Internal format for edge costs is integer, costs are multiplied before conversion to int by 1000. Costs -1 for infinity i.e. arc or node is closed and cannot be traversed.

Parameters

graph pointer to graph structure

Returns: void

Definition at line 98 of file vector/Vlib/graph.c.

References _, dglFlatten(), G_debug(), and G_fatal_error().

◆ Vect_graph_init()

void Vect_graph_init	(	dglGraph_s *	graph,
		int	nodes_costs
	)

Initialize graph structure.

Parameters

graph	pointer to graph structure
nodes_costs	use node costs

Returns: void

Definition at line 72 of file vector/Vlib/graph.c.

References dglInitialize(), and G_debug().

◆ Vect_graph_set_node_costs()

void Vect_graph_set_node_costs	(	dglGraph_s *	graph,
		int	node,
		double	costs
	)

Set node costs.

Internal format for edge costs is integer, costs are multiplied before conversion to int by 1000. Costs -1 for infinity i.e. arc or node is closed and cannot be traversed.

Parameters

graph	pointer to graph structure
node	node id
costs	costs value

Returns: void

Definition at line 154 of file vector/Vlib/graph.c.

References dglGetNode(), dglNodeSet_Attr(), and G_debug().

◆ Vect_graph_shortest_path()

int Vect_graph_shortest_path	(	dglGraph_s *	graph,
		int	from,
		int	to,
		struct ilist *	List,
		double *	cost
	)

Find shortest path.

Costs for 'from' and 'to' nodes are not considered (SP found even if 'from' or 'to' are 'closed' (costs = -1) and costs of these nodes are not added to SP costs result.

Parameters

graph	pointer to graph structure
from	from node
to	to node
List	list of line ids
cost	costs value

Returns: number of segments; 0 is correct for from = to, or List == NULL ), ? sum of costs is better return value,; -1 destination unreachable

Definition at line 183 of file vector/Vlib/graph.c.

◆ Vect_hist_command()

int Vect_hist_command ( struct Map_info * Map )

Write command info to history file.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 error

Definition at line 29 of file hist.c.

References G_date(), G_debug(), G_gisdbase(), G_location(), G_mapset(), G_recreate_command(), G_whoami(), GPATH_MAX, and Vect_hist_write().

◆ Vect_hist_copy()

int Vect_hist_copy	(	struct Map_info *	In,
		struct Map_info *	Out
	)

Copy history from one map to another.

Parameters

	In	input vector map
[out]	Out	output vector map

Returns: 0 on success; -1 on error

Definition at line 131 of file hist.c.

References G_debug(), G_fseek(), G_ftell(), Map_info::hist_fp, NULL, and Vect_hist_write().

Referenced by Vect_close().

◆ Vect_hist_read()

char* Vect_hist_read	(	char *	s,
		int	size,
		struct Map_info *	Map
	)

Reads one line from history file without newline character.

Parameters

[out]	s	buffer, allocated space must be size+1
	size	maximum number of character
	Map	vector map

Returns: return s on success; NULL on error; EOF end of file

Definition at line 90 of file hist.c.

◆ Vect_hist_rewind()

void Vect_hist_rewind ( struct Map_info * Map )

Rewind history file.

Parameters

Map	vector map

Returns: void

Definition at line 114 of file hist.c.

References G_debug(), Map_info::hist_fp, and NULL.

◆ Vect_hist_write()

int Vect_hist_write	(	struct Map_info *	Map,
		const char *	str
	)

Write string to history file.

Parameters

Map	pointer to Map_info structure
str	string to write

Returns: the number of characters printed; -1 on error

Definition at line 65 of file hist.c.

References G_debug(), and Map_info::hist_fp.

Referenced by Vect_hist_command(), and Vect_hist_copy().

◆ Vect_is_3d()

int Vect_is_3d ( struct Map_info * Map )

Check if vector map is 3D.

Check vector map header.

Parameters

Map	pointer to Map_info structure

Returns: TRUE vector map is 3D; FALSE vector map is not 3D

Definition at line 255 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::with_z.

Referenced by Vect_close(), Vect_get_area_box(), and Vect_get_isle_box().

◆ Vect_isle_alive()

int Vect_isle_alive	(	struct Map_info *	Map,
		int	isle
	)

Check if isle is alive or dead (topological level required)

Note: Topology must be built at level >= GV_BUILD_AREAS

Parameters

Map	pointer to Map_info structure
isle	isle id

Returns: 1 isle alive; 0 isle is dead or index is out of range

Definition at line 277 of file vector/Vlib/read.c.

References _, G_warning(), Plus_head::Isle, Plus_head::n_isles, NULL, and Map_info::plus.

◆ Vect_isle_find_area()

int Vect_isle_find_area	(	struct Map_info *	Map,
		int	isle,
		const struct bound_box *	box
	)

Find area outside island.

Parameters

Map	vector map
isle	isle id
box	isle bbox

Returns: area id; 0 if not found

Definition at line 179 of file build.c.

Referenced by Vect_attach_isle().

◆ Vect_legal_filename()

int Vect_legal_filename ( const char * s )

Check if output is legal vector name.

Rule: [A-Za-z][A-Za-z0-9_]*

Check also for SQL keywords.

Parameters

s	filename to be checked

Returns: 1 OK; -1 if name does not start with letter A..Za..z or if name does not continue with A..Za..z0..9_

Definition at line 32 of file legal_vname.c.

Referenced by Vect_copy().

◆ Vect_level()

int Vect_level ( struct Map_info * Map )

Returns level that Map is opened at.

1: no topology
2: topology support

Parameters

Map	vector map

Returns: open level; -1 on error

Definition at line 29 of file level.c.

References _, G_warning(), Map_info::level, Map_info::open, VECT_CLOSED_CODE, and VECT_OPEN_CODE.

Referenced by Vect_get_map_box().

◆ Vect_line_alive()

int Vect_line_alive	(	struct Map_info *	Map,
		int	line
	)

Check if feature is alive or dead (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

Parameters

Map	pointer to Map_info structure
line	feature id

Returns: 1 feature alive; 0 feature is dead or index is out of range

Definition at line 205 of file vector/Vlib/read.c.

◆ Vect_line_box()

void Vect_line_box	(	const struct line_pnts *	Points,
		struct bound_box *	Box
	)

Get bounding box of line.

Parameters

	Points	pointer to line_pnts structure
[out]	Box	bounding box

Definition at line 888 of file line.c.

◆ Vect_line_buffer()

void Vect_line_buffer	(	const struct line_pnts *	InPoints,
		double	distance,
		double	tolerance,
		struct line_pnts *	OutPoints
	)

Create buffer around the line line.

This function is replaced by Vect_line_buffer().

Buffer is closed counter clockwise polygon. Warning: output line may contain loops!

Parameters

	InPoints	input line
	distance	create buffer in distance
	tolerance	maximum distance between theoretical arc and polygon segments
[out]	OutPoints	output line

Definition at line 381 of file buffer.c.

◆ Vect_line_buffer2()

void Vect_line_buffer2	(	const struct line_pnts *	Points,
		double	da,
		double	db,
		double	dalpha,
		int	round,
		int	caps,
		double	tol,
		struct line_pnts **	oPoints,
		struct line_pnts ***	iPoints,
		int *	inner_count
	)

Creates buffer around line.

◆ Vect_line_check_duplicate()

int Vect_line_check_duplicate	(	const struct line_pnts *	APoints,
		const struct line_pnts *	BPoints,
		int	with_z
	)

Check for duplicate lines.

Note that lines must be pruned with Vect_line_prune() before passed to Vect_line_check_duplicate(), as done by Vect_remove_duplicates()

Parameters

APoints	first line geometry
BPoints	second line geometry

Returns: 1 duplicate; 0 not duplicate

Definition at line 214 of file remove_duplicates.c.

References line_pnts::n_points, line_pnts::x, line_pnts::y, and line_pnts::z.

◆ Vect_line_check_intersection()

int Vect_line_check_intersection	(	struct line_pnts *	APoints,
		struct line_pnts *	BPoints,
		int	with_z
	)

Check if 2 lines intersect.

Points (Points->n_points == 1) are also supported.

Superseded by the faster Vect_line_check_intersection2() Kept as reference implementation

Parameters

APoints	first input line
BPoints	second input line
with_z	3D, not supported (only if one or both are points)!

Returns: 0 no intersection; 1 intersection found

Definition at line 1466 of file vector/Vlib/intersect.c.

◆ Vect_line_check_intersection2()

int Vect_line_check_intersection2	(	struct line_pnts *	APoints,
		struct line_pnts *	BPoints,
		int	with_z
	)

Check if 2 lines intersect.

Points (Points->n_points == 1) are also supported.

simplified Bentley–Ottmann Algorithm: similar to Vect_line_check_intersection(), but faster

Parameters

APoints	first input line
BPoints	second input line
with_z	3D, not supported (only if one or both are points)!

Returns: 0 no intersection; 1 intersection; 2 end points only

Definition at line 1540 of file intersect2.c.

References line_check_intersection2().

◆ Vect_line_delete_point()

int Vect_line_delete_point	(	struct line_pnts *	Points,
		int	index
	)

Delete point at given index and move all points above down.

Parameters

Points	pointer to line_pnts structure
index	point (from 0 to Points->n_points-1)

Returns: number of points

Definition at line 210 of file line.c.

◆ Vect_line_distance()

int Vect_line_distance	(	const struct line_pnts *	points,
		double	ux,
		double	uy,
		double	uz,
		int	with_z,
		double *	px,
		double *	py,
		double *	pz,
		double *	dist,
		double *	spdist,
		double *	lpdist
	)

Calculate distance of point to line.

Sets (if not null):

px, py - point on line,
dist - distance to line,
spdist - distance to point on line from segment beginning,
lpdist - distance to point on line from line beginning along line

Parameters

	points	pointer to line_pnts structure
	ux,uy,uz	point coordinates
	with_z	flag if to use z coordinate (3D calculation)
[out]	px,py,pz	point on line
[out]	dist	distance to line
[out]	spdist	distance to point on line from segment beginning
[out]	lpdist	distance to point on line from line beginning along line

Returns: nearest segment (first is 1)

Definition at line 648 of file line.c.

References dig_distance2_point_to_line(), line_pnts::n_points, NULL, line_pnts::x, line_pnts::y, and line_pnts::z.

◆ Vect_line_geodesic_distance()

int Vect_line_geodesic_distance	(	const struct line_pnts *	points,
		double	ux,
		double	uy,
		double	uz,
		int	with_z,
		double *	px,
		double *	py,
		double *	pz,
		double *	dist,
		double *	spdist,
		double *	lpdist
	)

Calculate geodesic distance of point to line in meters.

Sets (if not null):

px, py - point on line,
dist - distance to line,
spdist - distance to point on line from segment beginning,
lpdist - distance to point on line from line beginning along line

Parameters

	points	pointer to line_pnts structure
	ux,uy,uz	point coordinates
	with_z	flag if to use z coordinate (3D calculation)
[out]	px,py,pz	point on line
[out]	dist	distance to line
[out]	spdist	distance to point on line from segment beginning
[out]	lpdist	distance to point on line from line beginning along line

Returns: nearest segment (first is 1)

Definition at line 751 of file line.c.

References dig_distance2_point_to_line(), G_begin_distance_calculations(), G_distance(), line_pnts::n_points, NULL, line_pnts::x, line_pnts::y, and line_pnts::z.

◆ Vect_line_geodesic_length()

double Vect_line_geodesic_length ( const struct line_pnts * Points )

Calculate line length.

If projection is LL, the length is measured along the geodesic.

Parameters

Points pointer to line_pnts structure geometry

Returns: line length

Definition at line 602 of file line.c.

◆ Vect_line_get_intersections()

int Vect_line_get_intersections	(	struct line_pnts *	APoints,
		struct line_pnts *	BPoints,
		struct line_pnts *	IPoints,
		int	with_z
	)

Get 2 lines intersection points.

A wrapper around Vect_line_check_intersection() function.

Superseded by the faster Vect_line_get_intersections2() Kept as reference implementation

Parameters

	APoints	first input line
	BPoints	second input line
[out]	IPoints	output with intersection points
	with_z	3D, not supported (only if one or both are points)!

Returns: 0 no intersection; 1 intersection found

Definition at line 1489 of file vector/Vlib/intersect.c.

◆ Vect_line_get_intersections2()

int Vect_line_get_intersections2	(	struct line_pnts *	APoints,
		struct line_pnts *	BPoints,
		struct line_pnts *	IPoints,
		int	with_z
	)

Get 2 lines intersection points.

A wrapper around Vect_line_check_intersection2() function.

simplified Bentley–Ottmann Algorithm: similar to Vect_line_get_intersections(), but faster

Parameters

	APoints	first input line
	BPoints	second input line
[out]	IPoints	output with intersection points
	with_z	3D, not supported (only if one or both are points)!

Returns: 0 no intersection; 1 intersection found

Definition at line 1562 of file intersect2.c.

◆ Vect_line_get_point()

int Vect_line_get_point	(	const struct line_pnts *	Points,
		int	index,
		double *	x,
		double *	y,
		double *	z
	)

Get line point of given index.

Calls G_fatal_error() when index is not range in.

Parameters

Points	pointer to line_pnts structure
index	point index (from 0 to Points->n_points-1)
x	pointer to x coordinate or NULL
y	pointer to y coordinate or NULL
z	pointer to z coordinate or NULL

Returns: number of points

Definition at line 244 of file line.c.

◆ Vect_line_insert_point()

int Vect_line_insert_point	(	struct line_pnts *	Points,
		int	index,
		double	x,
		double	y,
		double	z
	)

Insert new point at index position and move all old points at that position and above up.

Parameters

Points	pointer to line_pnts structure
index	(from 0 to Points->n_points-1)
x,y,z	point coordinates

Returns: number of points; -1 on error (allocation)

Definition at line 176 of file line.c.

◆ Vect_line_intersection()

int Vect_line_intersection	(	struct line_pnts *	,
		struct line_pnts *	,
		struct bound_box *	,
		struct bound_box *	,
		struct line_pnts ***	,
		struct line_pnts ***	,
		int *	,
		int *	,
		int
	)

◆ Vect_line_intersection2()

int Vect_line_intersection2	(	struct line_pnts *	APoints,
		struct line_pnts *	BPoints,
		struct bound_box *	pABox,
		struct bound_box *	pBBox,
		struct line_pnts ***	ALines,
		struct line_pnts ***	BLines,
		int *	nalines,
		int *	nblines,
		int	with_z
	)

Intersect 2 lines.

Creates array of new lines created from original A line, by intersection with B line. Points (Points->n_points == 1) are not supported. If B line is NULL, A line is intersected with itself.

simplified Bentley–Ottmann Algorithm: similar to Vect_line_intersection(), but faster additionally, self-intersections of a line are handled more efficiently

Parameters

	APoints	first input line
	BPoints	second input line or NULL
[out]	ALines	array of new lines created from original A line
[out]	BLines	array of new lines created from original B line
[out]	nalines	number of new lines (ALines)
[out]	nblines	number of new lines (BLines)
	with_z	3D, not supported!

Returns: 0 no intersection; 1 intersection found

Definition at line 675 of file intersect2.c.

References l.

◆ Vect_line_length()

double Vect_line_length ( const struct line_pnts * Points )

Calculate line length, 3D-length in case of 3D vector line.

For Lat-Long use Vect_line_geodesic_length() instead.

Parameters

Points pointer to line_pnts structure geometry

Returns: line length

Definition at line 575 of file line.c.

◆ Vect_line_parallel()

void Vect_line_parallel	(	struct line_pnts *	InPoints,
		double	distance,
		double	tolerance,
		int	rm_end,
		struct line_pnts *	OutPoints
	)

Create parallel line.

This function is replaced by Vect_line_parallel2().

Parameters

	InPoints	input line
	distance	create parallel line in distance
	tolerance	maximum distance between theoretical arc and polygon segments
	rm_end	remove end points falling into distance
[out]	OutPoints	output line

Returns

Definition at line 353 of file buffer.c.

◆ Vect_line_parallel2()

void Vect_line_parallel2	(	struct line_pnts *	InPoints,
		double	da,
		double	db,
		double	dalpha,
		int	side,
		int	round,
		double	tol,
		struct line_pnts *	OutPoints
	)

Definition at line 1189 of file buffer2.c.

References G_debug(), and line_pnts::n_points.

◆ Vect_line_prune()

int Vect_line_prune ( struct line_pnts * Points )

Remove duplicate points, i.e. zero length segments.

Parameters

Points pointer to line_pnts structure

Returns: number of points

Definition at line 279 of file line.c.

Referenced by Vect_build_line_area().

◆ Vect_line_prune_thresh()

int Vect_line_prune_thresh	(	struct line_pnts *	Points,
		double	threshold
	)

Remove points in threshold.

Parameters

Points	pointer to line_pnts structure
threshold	threshold value

Returns: number of points in result

Definition at line 309 of file line.c.

◆ Vect_line_reverse()

void Vect_line_reverse ( struct line_pnts * Points )

Reverse the order of vertices.

Parameters

Points pointer to line_pnts structure to be changed

Definition at line 898 of file line.c.

◆ Vect_line_segment()

int Vect_line_segment	(	const struct line_pnts *	InPoints,
		double	start,
		double	end,
		struct line_pnts *	OutPoints
	)

Create line segment.

Creates segment of InPoints from start to end measured along the line and write it to OutPoints.

If the distance is greater than line length or negative, error is returned.

Parameters

InPoints	input line
start	segment number
end	segment number
OutPoints	output line

Returns: 1 success; 0 error when start > length or end < 0 or start < 0 or end > length

Definition at line 517 of file line.c.

◆ Vect_line_to_geos()

GEOSGeometry* Vect_line_to_geos	(	const struct line_pnts *	points,
		int	type,
		int	with_z
	)

Create GEOSGeometry of given type from feature points.

Supported types:

GV_POINT -> POINT
GV_CENTROID -> POINT
GV_LINE -> LINESTRING
GV_BOUNDARY -> LINEARRING

You should free allocated memory by GEOSGeom_destroy().

Parameters

points	pointer to line_pnts structure
type	feature type (see supported types)
with_z	Set to 1 if the feature is 3d, 0 otherwise

Returns: pointer to GEOSGeometry instance; NULL on error

Definition at line 137 of file geos.c.

◆ Vect_line_to_wkb()

unsigned char* Vect_line_to_wkb	(	const struct line_pnts *	points,
		int	type,
		int	with_z,
		size_t *	size
	)

Create a Well Known Binary (WKB) representation of given feature type from points.

This function is not thread safe, it uses static variables for speedup.

Supported feature types:

GV_POINT -> POINT
GV_CENTROID -> POINT
GV_LINE -> LINESTRING
GV_BOUNDARY -> LINEARRING

Parameters

points	pointer to line_pnts structure
type	feature type (see supported types)
with_z	Set to 1 if the feature is 3d, 0 otherwise
size	The size of the returned byte array

Returns: pointer to char array; NULL on error

Definition at line 205 of file geos_to_wktb.c.

◆ Vect_line_to_wkt()

char* Vect_line_to_wkt	(	const struct line_pnts *	points,
		int	type,
		int	with_z
	)

Create a Well Known Text (WKT) representation of given feature type from points.

This function is not thread safe, it uses static variables for speedup.

Supported types:

GV_POINT -> POINT
GV_CENTROID -> POINT
GV_LINE -> LINESTRING
GV_BOUNDARY -> LINEARRING

Parameters

points	pointer to line_pnts structure
type	feature type (see supported types)
with_z	Set to 1 if the feature is 3d, 0 otherwise

Returns: pointer to char array; NULL on error

Definition at line 254 of file geos_to_wktb.c.

◆ Vect_list_append()

int Vect_list_append	(	struct ilist *	list,
		int	val
	)

Append new item to the end of list if not yet present.

Parameters

[in,out]	list	pointer to ilist structure
	val	new item to append to the end of list

Returns: 0 on success; 1 on error

Definition at line 89 of file vector/Vlib/list.c.

References G_realloc, and NULL.

Referenced by Vect_field_cat_get(), and Vect_list_append_list().

◆ Vect_list_append_list()

int Vect_list_append_list	(	struct ilist *	alist,
		const struct ilist *	blist
	)

Append new items to the end of list if not yet present.

Parameters

[in,out]	alist	pointer to ilist structure where items will be appended
	blist	pointer to ilist structure with new items

Returns: 0 on success; 1 on error

Definition at line 123 of file vector/Vlib/list.c.

References ilist::n_values, NULL, ilist::value, and Vect_list_append().

◆ Vect_list_delete()

int Vect_list_delete	(	struct ilist *	list,
		int	val
	)

Remove a given value (item) from list.

Parameters

[in,out]	list	pointer to ilist structure
	val	to remove

Returns: 0 on success; 1 on error

Definition at line 145 of file vector/Vlib/list.c.

References NULL.

Referenced by Vect_list_delete_list().

◆ Vect_list_delete_list()

int Vect_list_delete_list	(	struct ilist *	alist,
		const struct ilist *	blist
	)

Delete list from existing list.

Parameters

[in,out]	alist	pointer to original ilist structure,
	blist	pointer to ilist structure with items to delete

Returns: 0 on success; 1 on error

Definition at line 174 of file vector/Vlib/list.c.

References ilist::n_values, NULL, ilist::value, and Vect_list_delete().

◆ Vect_map_add_dblink()

int Vect_map_add_dblink	(	struct Map_info *	Map,
		int	number,
		const char *	name,
		const char *	table,
		const char *	key,
		const char *	db,
		const char *	driver
	)

Add new db connection to Map_info structure.

Parameters

Map	pointer to Map_info structure
number	layer number
name	layer name (if not given use table name)
table	table name
key	key name
db	database name
driver	driver name

Returns: 0 on success; -1 on failure

Definition at line 120 of file field.c.

Referenced by Vect_copy_map_dblinks().

◆ Vect_map_check_dblink()

int Vect_map_check_dblink	(	struct Map_info *	Map,
		int	field,
		const char *	name
	)

Check if DB connection exists in dblinks structure.

Parameters

Map	pointer to Map_info structure
field	layer number
name	layer name

Returns: 1 dblink for field exists; 0 dblink does not exist for field

Definition at line 237 of file field.c.

References Map_info::dblnk, name, and Vect_check_dblink().

◆ Vect_map_del_dblink()

int Vect_map_del_dblink	(	struct Map_info *	Map,
		int	field
	)

Delete db connection from Map_info structure.

Parameters

Map	pointer to Map_info structure
field	layer number (-1 to delete all dblinks)

Returns: 0 deleted; -1 error

Definition at line 160 of file field.c.

References _, field_info::database, Map_info::dblnk, field_info::driver, dblinks::field, G_debug(), G_warning(), field_info::key, dblinks::n_fields, field_info::name, field_info::number, field_info::table, and Vect_write_dblinks().

Referenced by Vect_close().

◆ Vect_maptype()

int Vect_maptype ( struct Map_info * Map )

Gets vector map format.

Currently are implemented:

Native format (GV_FORMAT_NATIVE)
OGR format linked via v.external (GV_FORMAT_OGR)
OGR format (GV_FORMAT_OGR_DIRECT)
PostGIS format (GV_FORMAT_POSTGIS)

Parameters

Map	pointer to Map_info structure

Returns: map format code

Definition at line 1103 of file vector/Vlib/open.c.

References Format_info_pg::conninfo, Format_info_ogr::driver_name, Map_info::fInfo, Map_info::format, GV_FORMAT_OGR, GV_FORMAT_POSTGIS, Format_info::ogr, Format_info::pg, and Map_info::temporary.

Referenced by Vect_fidx_dump().

◆ Vect_maptype_info()

const char* Vect_maptype_info ( struct Map_info * Map )

Gets vector map format (as string)

Note: string is allocated by G_store(). Free allocated memory with G_free().

Currently are implemented:

Native format (native)
OGR format (ogr)
PostGIS format (postgis)

Parameters

Map	pointer to Map_info structure

Returns: maptype string on success (allocated by G_store()); error message on error

Definition at line 1067 of file vector/Vlib/open.c.

References _, Map_info::format, G_store(), GV_FORMAT_NATIVE, GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, and GV_FORMAT_POSTGIS.

Referenced by Vect_fidx_dump().

◆ Vect_merge_lines()

int Vect_merge_lines	(	struct Map_info *	Map,
		int	type,
		int *	new_lines,
		struct Map_info *	Err
	)

Merge lines or boundaries in vector map.

Merges lines specified by type in vector map. Useful for generalization and smoothing. Adjacent boundaries are merged as long as topology is maintained. Adjacent lines are merged as long as there are exactly two different lines with identical categories connected at a given node. Zero-length lines need to be removed first. GV_BUILD_BASE as topo build level is sufficient, areas need not be built.

Parameters

	Map	input vector map
	type	feature type
[out]	Err	vector map where merged lines/boundaries will be written or NULL
	new_lines	pointer to where number of new lines/boundaries is stored or NULL

Returns: number of merged lines/boundaries

Definition at line 79 of file merge_lines.c.

◆ Vect_net_build_graph()

int Vect_net_build_graph	(	struct Map_info *	Map,
		int	ltype,
		int	afield,
		int	nfield,
		const char *	afcol,
		const char *	abcol,
		const char *	ncol,
		int	geo,
		int	version
	)

Build network graph.

Internal format for edge costs is integer, costs are multiplied before conversion to int by 1000 and for lengths LL without geo flag by

The same multiplication factor is used for nodes. Costs in database column may be 'integer' or 'double precision' number >= 0 or -1 for infinity i.e. arc or node is closed and cannot be traversed If record in table is not found for arcs, arc is skip. If record in table is not found for node, costs for node are set to 0.

Parameters

Map	vector map
ltype	line type for arcs
afield	arc costs field (if 0, use length)
nfield	node costs field (if 0, do not use node costs)
afcol	column with forward costs for arc
abcol	column with backward costs for arc (if NULL, back costs = forward costs),
ncol	column with costs for nodes (if NULL, do not use node costs),
geo	use geodesic calculation for length (LL),
version	graph version to create (1, 2, 3)

Returns: 0 on success, 1 on error

Definition at line 695 of file net_build.c.

◆ Vect_net_get_graph()

dglGraph_s* Vect_net_get_graph ( struct Map_info * Map )

Get graph structure.

Graph is built by Vect_net_build_graph().

Returns NULL when graph is not built.

Parameters

Map	pointer to Map_info struct

Returns: pointer to dglGraph_s struct or NULL

Definition at line 397 of file net_analyze.c.

References Map_info::dgraph, and Graph_info::graph_s.

◆ Vect_net_get_line_cost()

int Vect_net_get_line_cost	(	struct Map_info *	Map,
		int	line,
		int	direction,
		double *	cost
	)

Returns in cost for given direction in *cost.

cost is set to -1 if closed.

Parameters

	Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
	line	line id
	direction	direction (GV_FORWARD, GV_BACKWARD)
[out]	cost

Returns: 1 OK; 0 does not exist (was not inserted)

Definition at line 414 of file net_analyze.c.

◆ Vect_net_get_node_cost()

int Vect_net_get_node_cost	(	struct Map_info *	Map,
		int	node,
		double *	cost
	)

Get cost of node.

Parameters

	Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
	node	node id
[out]	cost	costs value

Returns: 1

Definition at line 468 of file net_analyze.c.

References Map_info::dgraph, G_debug(), and Graph_info::node_costs.

◆ Vect_net_nearest_nodes()

int Vect_net_nearest_nodes	(	struct Map_info *	Map,
		double	x,
		double	y,
		double	z,
		int	direction,
		double	maxdist,
		int *	node1,
		int *	node2,
		int *	ln,
		double *	costs1,
		double *	costs2,
		struct line_pnts *	Points1,
		struct line_pnts *	Points2,
		double *	distance
	)

Find nearest node(s) on network.

Parameters

	Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
	x,y,z	point coordinates (z coordinate NOT USED !)
	direction	(GV_FORWARD - from point to net, GV_BACKWARD - from net to point)
	maxdist	maximum distance to the network
[out]	node1	pointer where to store the node number (or NULL)
[out]	node2	pointer where to store the node number (or NULL)
[out]	ln	pointer where to store the nearest line number (or NULL)
[out]	costs1	pointer where to store costs on nearest line to node1 (not costs from x,y,z to the line) (or NULL)
[out]	costs2	pointer where to store costs on nearest line to node2 (not costs from x,y,z to the line) (or NULL)
[out]	Points1	pointer to structure where to store vertices on nearest line to node1 (or NULL)
[out]	Points2	pointer to structure where to store vertices on nearest line to node2 (or NULL)
[out]	pointer	where to distance to the line (or NULL)
[out]	distance

Returns: number of nodes found (0,1,2)

Definition at line 499 of file net_analyze.c.

◆ Vect_net_shortest_path()

int Vect_net_shortest_path	(	struct Map_info *	Map,
		int	from,
		int	to,
		struct ilist *	List,
		double *	cost
	)

Find shortest path.

Costs for 'from' and 'to' nodes are not considered (SP found even if 'from' or 'to' are 'closed' (costs = -1) and costs of these nodes are not added to SP costs result.

Parameters

	Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
	from	from node
	to	to node
[out]	List	list of line ids (path)
[out]	cost	costs value

Returns: number of segments; 0 is correct for from = to, or List == NULL ? sum of costs is better return value,; -1 : destination unreachable

Definition at line 380 of file net_analyze.c.

◆ Vect_net_shortest_path_coor()

int Vect_net_shortest_path_coor	(	struct Map_info *	Map,
		double	fx,
		double	fy,
		double	fz,
		double	tx,
		double	ty,
		double	tz,
		double	fmax,
		double	tmax,
		double *	costs,
		struct line_pnts *	Points,
		struct ilist *	List,
		struct ilist *	NodesList,
		struct line_pnts *	FPoints,
		struct line_pnts *	TPoints,
		double *	fdist,
		double *	tdist
	)

Find shortest path on network between 2 points given by coordinates.

Parameters

Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
fx,fy,fz	from point x coordinate (z ignored)
tx,ty,tz	to point x coordinate (z ignored)
fmax	maximum distance to the network from 'from'
tmax	maximum distance to the network from 'to'
costs	pointer where to store costs on the network (or NULL)
Points	pointer to the structure where to store vertices of shortest path (or NULL)
List	pointer to the structure where list of lines on the network is stored (or NULL)
NodesList	pointer to the structure where list of nodes on the network is stored (or NULL)
FPoints	pointer to the structure where to store line from 'from' to first network node (or NULL)
TPoints	pointer to the structure where to store line from last network node to 'to' (or NULL)
fdist	distance from 'from' to the net (or NULL)
tdist	distance from 'to' to the net (or NULL)

Returns: 1 OK, 0 not reachable

Definition at line 1016 of file net_analyze.c.

◆ Vect_net_ttb_build_graph()

int Vect_net_ttb_build_graph	(	struct Map_info *	,
		int	,
		int	,
		int	,
		int	,
		int	,
		const char *	,
		const char *	,
		const char *	,
		int	,
		int
	)

◆ Vect_net_ttb_shortest_path()

int Vect_net_ttb_shortest_path	(	struct Map_info *	Map,
		int	from,
		int	from_type,
		int	to,
		int	to_type,
		int	tucfield,
		struct ilist *	List,
		double *	cost
	)

Find shortest path on network.

Costs for 'from' and 'to' nodes are not considered (SP found even if 'from' or 'to' are 'closed' (costs = -1) and costs of these nodes are not added to SP costs result.

Parameters

	Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
	from	start of the path
	from_type	if 0 - node id (intersection), if 1 - line unique cat
	to	end of the path
	to_type	if 0 - node id (intersection), if 1 - line unique cat
	tucfield	field with unique categories used in the turntable
[out]	List	list of line ids (path)
[out]	cost	costs value

Returns: number of segments; 0 is correct for from = to, or List == NULL ? sum of costs is better return value,; -1 : destination unreachable

Definition at line 260 of file net_analyze.c.

References t, and x.

◆ Vect_net_ttb_shortest_path_coor()

int Vect_net_ttb_shortest_path_coor	(	struct Map_info *	Map,
		double	fx,
		double	fy,
		double	fz,
		double	tx,
		double	ty,
		double	tz,
		double	fmax,
		double	tmax,
		int	tucfield,
		double *	costs,
		struct line_pnts *	Points,
		struct ilist *	List,
		struct ilist *	NodesList,
		struct line_pnts *	FPoints,
		struct line_pnts *	TPoints,
		double *	fdist,
		double *	tdist
	)

Find shortest path on network with turntable between 2 points given by coordinates.

Parameters

Map	vector map with build graph (see Vect_net_ttb_build_graph and Vect_net_build_graph)
fx,fy,fz	from point x coordinate (z ignored)
tx,ty,tz	to point x coordinate (z ignored)
fmax	maximum distance to the network from 'from'
tmax	maximum distance to the network from 'to'
tucfield	field with unique categories used in the turntable
costs	pointer where to store costs on the network (or NULL)
Points	pointer to the structure where to store vertices of shortest path (or NULL)
List	pointer to the structure where list of lines on the network is stored (or NULL)
NodesList	pointer to the structure where list of nodes on the network is stored (or NULL)
FPoints	pointer to the structure where to store line from 'from' to first network node (or NULL)
TPoints	pointer to the structure where to store line from last network node to 'to' (or NULL)
fdist	distance from 'from' to the net (or NULL)
tdist	distance from 'to' to the net (or NULL)

Returns: 1 OK, 0 not reachable

Definition at line 1052 of file net_analyze.c.

◆ Vect_new_boxlist()

struct boxlist* Vect_new_boxlist ( int have_boxes )

Creates and initializes a struct boxlist.

This structure is used as container for bounding boxes with id. The library routines handle all memory allocation.

Parameters

have_boxes if set to 0, the list will hold only ids and no boxes

Returns: pointer to struct boxlist; NULL on error

Definition at line 224 of file vector/Vlib/list.c.

References boxlist::alloc_values, boxlist::box, G_malloc, boxlist::have_boxes, boxlist::id, boxlist::n_values, and NULL.

Referenced by Vect_attach_isles(), and Vect_find_area().

◆ Vect_new_cat_list()

struct cat_list* Vect_new_cat_list ( void )

Allocate memory for cat_list structure.

Returns: pointer to allocated structure; NULL if out of memory

Definition at line 309 of file vector/Vlib/cats.c.

References G_malloc, and G_zero().

◆ Vect_new_cats_struct()

struct line_cats* Vect_new_cats_struct ( void )

Creates and initializes line_cats structure.

This structure is used for reading and writing vector cats. The library routines handle all memory allocation.

To free allocated memory call Vect_destroy_cats_struct().

Returns: struct line_cats *; NULL on error

Definition at line 39 of file vector/Vlib/cats.c.

References NULL.

Referenced by NetA_initialise_varray(), and Vect_get_area_cat().

◆ Vect_new_dblinks_struct()

struct dblinks* Vect_new_dblinks_struct ( void )

Create and init new dblinks structure.

Returns: pointer to new dblinks structure; NULL on failure

Definition at line 52 of file field.c.

References G_malloc, and G_zero().

◆ Vect_new_line_struct()

struct line_pnts* Vect_new_line_struct ( void )

Creates and initializes a line_pnts structure.

This structure is used for reading and writing vector lines and polygons. The library routines handle all memory allocation. If 3 lines in memory are needed at the same time, then simply 3 line_pnts structures have to be used.

To free allocated memory call Vect_destroy_line_struct().

Calls G_fatal_error() on error.

Returns: pointer to line_pnts

Definition at line 45 of file line.c.

References _, G_fatal_error(), NULL, and Vect__new_line_struct().

Referenced by Vect__reallocate_cache(), Vect_build_line_area(), Vect_point_buffer2(), and vector2perimeters().

◆ Vect_new_list()

struct ilist* Vect_new_list ( void )

Creates and initializes a struct ilist.

This structure is used as container for integer values. The library routines handle all memory allocation.

Returns: pointer to struct ilist; NULL on error

Definition at line 31 of file vector/Vlib/list.c.

References ilist::alloc_values, G_malloc, ilist::n_values, NULL, and ilist::value.

Referenced by Vect_find_node(), Vect_select_areas_by_polygon(), and Vedit_extend_lines().

◆ Vect_new_map_struct()

struct Map_info* Vect_new_map_struct ( void )

Creates and initializes Map_info structure.

To free allocated memory call Vect_destroy_map_struct().

Returns: pointer to Map_info

Definition at line 41 of file map.c.

References _, G_fatal_error(), G_zero(), malloc(), and NULL.

◆ Vect_new_varray()

struct varray* Vect_new_varray ( int size )

Create new struct varray and allocate space for given number of items.

Space allocated is 'size + 1' so that lines are accessed by line id. Array values are set to 0.

Parameters

size	size of array

Returns: pointer to new struct varray; NULL if failed

Definition at line 39 of file array.c.

References varray::c, G_calloc, G_free(), G_malloc, NULL, and varray::size.

Referenced by NetA_initialise_varray().

◆ Vect_node_alive()

int Vect_node_alive	(	struct Map_info *	Map,
		int	node
	)

Check if node is alive or dead (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

Parameters

Map	pointer to Map_info structure
node	node id

Returns: 1 node alive; 0 node is dead or index is out of range

Definition at line 229 of file vector/Vlib/read.c.

References _, G_warning(), Plus_head::n_nodes, Plus_head::Node, NULL, and Map_info::plus.

◆ Vect_open_fidx()

int Vect_open_fidx	(	struct Map_info *	Map,
		struct Format_info_offset *	offset
	)

Open feature index file.

Parameters

[in,out]	Map	pointer to Map_info struct
[out]	offset	pointer to Format_info_offset (OGR or PG)

Returns: 0 on success; -1 on error

Definition at line 254 of file open_ogr.c.

References _, Format_info_offset::array, Format_info_offset::array_alloc, Format_info_offset::array_num, Port_info::byte_order, dig__fread_port_C(), dig__fread_port_I(), dig__fread_port_L(), dig_file_init(), dig_init_portable(), dig_set_cur_port(), gvfile::file, Map_info::format, G_debug(), G_fatal_error(), G_fopen_old(), G_fseek(), G_malloc, G_warning(), GPATH_MAX, GV_DIRECTORY, GV_FIDX_ELEMENT, Map_info::mapset, Map_info::name, NULL, and Vect_get_full_name().

Referenced by V2_open_old_ogr(), and V2_open_old_pg().

◆ Vect_open_new()

int Vect_open_new	(	struct Map_info *	Map,
		const char *	name,
		int	with_z
	)

Create new vector map for reading/writing.

By default list of updated features is not maintained, see Vect_set_updated() for details.

By default map format is native (GV_FORMAT_NATIVE). If OGR file is found in the current mapset then the map (ie. OGR layer) is created in given OGR datasource (GV_FORMAT_OGR). Similarly if PG file exists then the map (ie. PostGIS table) is created using PostGIS interface (GV_FORMAT_POSTGIS). The format of map is stored in Map->format.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to be created
	with_z	WITH_Z for 3D vector data otherwise WITHOUT_Z

Returns: 1 on success; -1 on error

Definition at line 954 of file vector/Vlib/open.c.

References G_debug().

Referenced by Vect_close().

◆ Vect_open_old()

int Vect_open_old	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Open existing vector map for reading.

This function is replaced by Vect_open_old2() to handle also direct OGR support.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to open
	mapset	mapset name ("" for search path)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 596 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, and Vect__open_old().

◆ Vect_open_old2()

int Vect_open_old2	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset,
		const char *	layer
	)

Open existing vector map for reading.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to open (datasource for direct OGR access)
	mapset	mapset name ("" for search path, "OGR" for direct OGR access)
	layer	layer name (OGR layer for direct OGR access)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 639 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, and Vect__open_old().

◆ Vect_open_old_head()

int Vect_open_old_head	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Reads only info about vector map (headers)

Reads from headers of 'head', 'dbln', 'topo' and 'cidx' file.

This function is replaced by Vect_open_old_head2() to handle also direct OGR support.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to read
	mapset	mapset name ("" for search path)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 737 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, TRUE, and Vect__open_old().

◆ Vect_open_old_head2()

int Vect_open_old_head2	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset,
		const char *	layer
	)

Reads only info about vector map (headers)

Reads from headers of 'head', 'dbln', 'topo' and 'cidx' file.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to read (dsn for OGR)
	mapset	mapset name ("" for search path)
	layer	layer name (OGR format)
[out]	Map	pointer to Map_info structure
	name	name of vector map to open (datasource for direct OGR access)
	mapset	mapset name ("" for search path, "OGR" for direct OGR access)
	layer	layer name (OGR layer for direct OGR access)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 764 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, TRUE, and Vect__open_old().

◆ Vect_open_sidx()

int Vect_open_sidx	(	struct Map_info *	Map,
		int	mode
	)

Open spatial index file ('sidx')

Parameters

[in,out]	Map	pointer to Map_info
	mode	0 old, 1 update, 2 new

Returns: 1 if sidx file is not available; 0 on success; -1 on error

Definition at line 1211 of file vector/Vlib/open.c.

Referenced by Vect_build_partial().

◆ Vect_open_tmp_new()

int Vect_open_tmp_new	(	struct Map_info *	Map,
		const char *	name,
		int	with_z
	)

Create new temporary vector map.

Temporary vector maps are stored in the current mapset (directory .tmp/<hostname>/vector). If the map already exists, it is overwritten.

Temporary vector maps are automatically deleted when closing the map (see Vect_close() for details).

If name is not given (is NULL), then the name is determined by process id (tmp_<pid>).

Parameters

[out]	Map	pointer to output Map_info struct
	name	name for new vector map (or NULL)
	with_z	WITH_Z for 3D vector data otherwise WITHOUT_Z

Returns: 1 on success; -1 on error

Definition at line 985 of file vector/Vlib/open.c.

References G_debug(), GNAME_MAX, and name.

◆ Vect_open_tmp_old()

int Vect_open_tmp_old	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Open existing temporary vector map for reading.

Temporary vector maps are stored in the current mapset (directory .tmp/<hostname>/vector).

Calls G_fatal_error() on failure.

Todo:: Create new vector map if doesn't exist.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to open
	mapset	mapset name ("" for search path)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 619 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, TRUE, and Vect__open_old().

◆ Vect_open_tmp_update()

int Vect_open_tmp_update	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Open existing temporary vector map for reading/writing.

Temporary vector maps are stored in the current mapset (directory .tmp/<hostname>/vector).

By default list of updated features is not maintained, see Vect_set_updated() for details.

Calls G_fatal_error() on failure.

Todo:: Create new vector map if doesn't exist.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to update
	mapset	mapset name

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 690 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, TRUE, and Vect__open_old().

◆ Vect_open_topo()

int Vect_open_topo	(	struct Map_info *	Map,
		int	head_only
	)

Open topology file ('topo')

Parameters

[in,out]	Map	pointer to Map_info structure
	head_only	TRUE to read only header

Returns: 0 on success; 1 file does not exist; -1 on error

Definition at line 1130 of file vector/Vlib/open.c.

References _, Plus_head::coor_mtime, Plus_head::coor_size, dig_file_init(), dig_load_plus(), dig_Rd_Plus_head(), err(), gvfile::file, G_debug(), G_fopen_old(), G_warning(), GPATH_MAX, GV_TOPO_ELEMENT, Map_info::mapset, Map_info::name, NULL, Map_info::plus, Coor_info::size, Vect__get_element_path(), Vect__get_path(), and Vect_coor_info().

◆ Vect_open_update()

int Vect_open_update	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Open existing vector map for reading/writing.

This function is replaced by Vect_open_update2() to handle also direct OGR support.

By default list of updated features is not maintained, see Vect_set_updated() for details.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to update
	mapset	mapset name

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 664 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, TRUE, and Vect__open_old().

◆ Vect_open_update2()

int Vect_open_update2	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset,
		const char *	layer
	)

Open existing vector map for reading/writing.

By default list of updated features is not maintained, see Vect_set_updated() for details.

Calls G_fatal_error() on failure.

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to open (datasource for direct OGR access)
	mapset	mapset name ("" for search path, "OGR" for direct OGR access)
	layer	layer name (OGR layer for direct OGR access)

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 713 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, TRUE, and Vect__open_old().

◆ Vect_open_update_head()

int Vect_open_update_head	(	struct Map_info *	Map,
		const char *	name,
		const char *	mapset
	)

Open header file of existing vector map for updating (mostly for database link updates)

Parameters

[out]	Map	pointer to Map_info structure
	name	name of vector map to update
	mapset	mapset name

Returns: 1 open on level 1 (without topology); 2 open on level 2 (with topology); -1 on error

Definition at line 781 of file vector/Vlib/open.c.

References FALSE, Map_info::mapset, name, NULL, TRUE, and Vect__open_old().

◆ Vect_option_to_types()

int Vect_option_to_types ( const struct Option * type_opt )

Get types from options.

Parameters

type_opt Option structure

Returns: types; -1 on error

Definition at line 26 of file vector/Vlib/type.c.

◆ Vect_overlay()

int Vect_overlay	(	struct Map_info *	AMap,
		int	atype,
		struct ilist *	AList,
		struct ilist *	AAList,
		struct Map_info *	BMap,
		int	btype,
		struct ilist *	BList,
		struct ilist *	BAList,
		int	operator,
		struct Map_info *	OMap
	)

Overlay 2 vector maps and create new one.

Parameters

	AMap	vector map A
	atype	feature type for A
	AList	unused ?
	AAList	unused ?
	BMap	vector map B
	btype	feature type for B
	BList	unused ?
	BAList	unused ?
	operator	operator code
[out]	OMap	output vector map

Returns: 0 on success

Definition at line 62 of file overlay.c.

References _, G_fatal_error(), GV_O_AND, and Vect_overlay_and().

◆ Vect_overlay_and()

int Vect_overlay_and	(	struct Map_info *	,
		int	,
		struct ilist *	,
		struct ilist *	,
		struct Map_info *	,
		int	,
		struct ilist *	,
		struct ilist *	,
		struct Map_info *
	)

◆ Vect_overlay_str_to_operator()

int Vect_overlay_str_to_operator ( const char * str )

Get operator code from string.

Parameters

str	operator code string

Returns: operator code; -1 on error

Definition at line 35 of file overlay.c.

References GV_O_AND, GV_O_OVERLAP, GV_ON_AND, and GV_ON_OVERLAP.

◆ Vect_point_buffer2()

void Vect_point_buffer2	(	double	px,
		double	py,
		double	da,
		double	db,
		double	dalpha,
		int	round,
		double	tol,
		struct line_pnts **	oPoints
	)

Creates buffer around the point (px, py).

Parameters

	px	input point x-coordinate
	py	input point y-coordinate
	da	distance along major axis
	db	distance along minor axis
	dalpha	angle between 0x and major axis
	round	make corners round
	tol	maximum distance between theoretical arc and output segments
[out]	oPoints	output polygon outer border (ccw order)

Definition at line 1139 of file buffer2.c.

References G_debug(), PI, and Vect_new_line_struct().

◆ Vect_point_in_area()

int Vect_point_in_area	(	double	x,
		double	y,
		struct Map_info *	Map,
		int	area,
		struct bound_box *	box
	)

Check if point is in area.

Parameters

x,y	point coordinates
Map	pointer to Map_info structure
area	area id
box	area bounding box

Returns: 0 if point is outside area; 1 if point is inside area; 2 if point is on the area's outer ring

Definition at line 334 of file vector/Vlib/area.c.

◆ Vect_point_in_area_outer_ring()

int Vect_point_in_area_outer_ring	(	double	X,
		double	Y,
		struct Map_info *	Map,
		int	area,
		struct bound_box *	box
	)

Determines if a point (X,Y) is inside an area outer ring. Islands are not considered.

Parameters

X,Y	point coordinates
Map	vector map
area	area id
box	area bounding box

Returns: 0 - outside; 1 - inside; 2 - on the boundary

Definition at line 854 of file Vlib/poly.c.

◆ Vect_point_in_box()

int Vect_point_in_box	(	double	x,
		double	y,
		double	z,
		const struct bound_box *	Box
	)

Tests if point is in 3D box.

This function considers 3D point and 3D bounding box.

Example

struct bound_box bbox;
bbox.N = 135;
bbox.S = 125;
bbox.E = 220;
bbox.W = 215;
bbox.T = 340;
bbox.B = 330;
Vect_point_in_box(217, 130, 335, &bbox);

Parameters

x	coordinate (W-E direction)
y	coordinate (S-N direction)
z	coordinate (B-T direction)
Box	boundary box

Returns: 1 if point is in box; 0 if point is not in box

Definition at line 48 of file vector/Vlib/box.c.

References Box, N, and x.

Referenced by P_Mean_Calc().

◆ Vect_point_in_box_2d()

int Vect_point_in_box_2d	(	double	x,
		double	y,
		const struct bound_box *	Box
	)

Tests if point is in 2D box.

Only x and y are tested. Top and bottom of the bounding box are ignored.

Parameters

x	coordinate (W-E direction)
y	coordinate (S-N direction)
Box	boundary box (only W, E, S, N are used)

Returns: 1 if point is in box; 0 if point is not in box

Definition at line 67 of file vector/Vlib/box.c.

References Box, N, and x.

◆ Vect_point_in_island()

int Vect_point_in_island	(	double	X,
		double	Y,
		struct Map_info *	Map,
		int	isle,
		struct bound_box *	box
	)

Determines if a point (X,Y) is inside an island.

Parameters

X,Y	point coordinates
Map	vector map
isle	isle id
box	isle bounding box

Returns: 0 - outside; 1 - inside; 2 - on the boundary

Definition at line 923 of file Vlib/poly.c.

◆ Vect_point_in_poly()

int Vect_point_in_poly	(	double	X,
		double	Y,
		const struct line_pnts *	Points
	)

Determines if a point (X,Y) is inside a polygon.

Parameters

X,Y	point coordinates
Points	polygon

Returns: 0 - outside; 1 - inside; 2 - on the boundary

Definition at line 824 of file Vlib/poly.c.

◆ Vect_point_on_line()

int Vect_point_on_line	(	const struct line_pnts *	Points,
		double	distance,
		double *	x,
		double *	y,
		double *	z,
		double *	angle,
		double *	slope
	)

Find point on line in the specified distance.

From the beginning, measured along line.

If the distance is greater than line length or negative, error is returned.

Parameters

Points	pointer to line_pnts structure
distance	distance value
x,y,z	pointers to point coordinates or NULL
angle	pointer to angle of line in that point (radians, counter clockwise from x axis) or NULL
slope	pointer to slope angle in radians (positive up)

Returns: number of segment the point is on (first is 1),; 0 error when point is outside the line

Definition at line 413 of file line.c.

◆ Vect_points_distance()

double Vect_points_distance	(	double	x1,
		double	y1,
		double	z1,
		double	x2,
		double	y2,
		double	z2,
		int	with_z
	)

Calculate distance of 2 points.

Simply uses Pythagoras.

Parameters

x1,y1,z1	first point
x2,y2,z2	second point
with_z	use z coordinate

Returns: distance

Definition at line 866 of file line.c.

Referenced by Vect_find_node(), and Vedit_get_min_distance().

◆ Vect_print_header()

int Vect_print_header ( struct Map_info * Map )

Print vector map header to stdout.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success

Definition at line 33 of file vector/Vlib/header.c.

References Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), and Vect_get_scale().

◆ Vect_read_area_geos()

GEOSGeometry* Vect_read_area_geos	(	struct Map_info *	Map,
		int	area
	)

Read vector area and stores it as GEOSGeometry instance (polygon)

You should free allocated memory by GEOSGeom_destroy().

Parameters

Map	pointer to Map_info structure
area	area id

Returns: pointer to GEOSGeometry instance; NULL on error

Definition at line 84 of file geos.c.

Referenced by Vect_read_area_to_wkb(), and Vect_read_area_to_wkt().

◆ Vect_read_area_to_wkb()

unsigned char* Vect_read_area_to_wkb	(	struct Map_info *	Map,
		int	area,
		size_t *	size
	)

Read vector area and return it as Well Known Binary (WKB) unsigned char array.

Parameters

Map	pointer to Map_info structure
area	area id
size	The size of the returned unsigned char array

Returns: pointer to unsigned char array; NULL on error

Definition at line 33 of file geos_to_wktb.c.

References init(), NULL, and Vect_read_area_geos().

◆ Vect_read_area_to_wkt()

char* Vect_read_area_to_wkt	(	struct Map_info *	Map,
		int	area
	)

Read vector area and return it as Well Known Text (WKT) unsigned char array.

Parameters

Map	pointer to Map_info structure
area	area id
size	The size of the returned unsigned char array

Returns: pointer to char array; NULL on error

Definition at line 74 of file geos_to_wktb.c.

References init(), NULL, and Vect_read_area_geos().

◆ Vect_read_ascii()

int Vect_read_ascii	(	FILE *	ascii,
		struct Map_info *	Map
	)

Read data in GRASS ASCII vector format.

Parameters

	ascii	pointer to the input ASCII file
[out]	Map	pointer to the output Map_info structure

Returns: number of read features; -1 on error

Definition at line 42 of file ascii.c.

References BUFFSIZE, and x.

◆ Vect_read_ascii_head()

int Vect_read_ascii_head	(	FILE *	dascii,
		struct Map_info *	Map
	)

Read header of GRASS ASCII vector format.

Parameters

dascii	pointer to the ASCII file
Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 257 of file ascii.c.

References _, G_getl2(), G_warning(), Vect_set_comment(), Vect_set_date(), Vect_set_map_date(), Vect_set_map_name(), Vect_set_organization(), Vect_set_person(), Vect_set_scale(), Vect_set_thresh(), and Vect_set_zone().

◆ Vect_read_colors()

int Vect_read_colors	(	const char *	name,
		const char *	mapset,
		struct Colors *	colors
	)

Read color table of vector map.

The color table for the vector map name in the specified mapset is read into the colors structure.

Note: If a secondary color file for map name name exists in the current mapset, that color file is read. This allows the user to define their own color lookup tables for vector maps found in other mapsets.

Warning message is printed if the color file is missing or invalid.

Parameters

	name	vector map name
	mapset	mapset name ("" for search path)
[out]	colors	pointer to Colors structure (can be NULL)

Returns: -1 on error; 0 if color table missing; 1 on success (color table found)

Definition at line 42 of file vector/Vlib/color_read.c.

◆ Vect_read_dblinks()

int Vect_read_dblinks ( struct Map_info * Map )

Read dblinks to existing structure.

Variables are not substituted by values.

Parameters

Map	pointer to Map_info structure

Returns: number of links read; -1 on error

Definition at line 846 of file field.c.

References Map_info::dblnk, Map_info::format, G_debug(), GV_FORMAT_NATIVE, Map_info::mapset, Map_info::name, and Vect_reset_dblinks().

◆ Vect_read_header()

int Vect_read_header ( struct Map_info * Map )

Read vector map header from map head file.

Parameters

Map	pointrt to Map_info structure

Returns: 0

Definition at line 51 of file vector/Vlib/header.c.

References Vect__read_head().

◆ Vect_read_line()

int Vect_read_line	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		int	line
	)

Read vector feature (topological level required)

This function implements random access. Constraints are ignored.

Note: Topology must be built at level >= GV_BUILD_BASE

A warning is printed on failure.

Parameters

	Map	pointer to vector map
[out]	line_p	feature geometry (pointer to line_pnts struct)
[out]	line_c	feature categories (pointer to line_cats struct)
	line	feature id (starts at 1)

Returns: feature type; -1 on failure; -2 nothing to read

Definition at line 168 of file vector/Vlib/read.c.

Referenced by NetA_initialise_varray(), and Vect_get_area_cats().

◆ Vect_read_line_geos()

GEOSGeometry* Vect_read_line_geos	(	struct Map_info *	Map,
		int	line,
		int *	type
	)

Read vector feature and stores it as GEOSGeometry instance.

Supported feature types:

GV_POINT -> POINT
GV_LINE -> LINESTRING
GV_BOUNDARY -> LINESTRING / LINEARRING

You should free allocated memory by GEOSGeom_destroy().

Parameters

	Map	pointer to Map_info structure
	line	feature id
[out]	type	feature type or NULL

Returns: pointer to GEOSGeometry instance; empty GEOSGeometry for unsupported feature type; NULL on error

Definition at line 45 of file geos.c.

◆ Vect_read_line_to_wkb()

unsigned char* Vect_read_line_to_wkb	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		int	line,
		size_t *	size,
		int *	error
	)

Read a Well Known Binary (WKB) representation of a given feature id.

This function reads a specific feature and converts it into a WKB representation. line_pnts and line_cats structures can be provided to store the result of the read operation. That is meaningful in case the category values of the feature are needed. This function is not thread safe, it uses static variables for speedup.

Supported feature types:

GV_POINT -> POINT
GV_CENTROID -> POINT
GV_LINE -> LINESTRING
GV_BOUNDARY -> LINEARRING

Parameters

Map	pointer to Map_info structure
line_p	pointer to line_pnts structure to use, or NULL
line_c	pointer to line_cats structure to use, or NULL
line	The id of the feature to read
size	The size of the returned unsigned char array

Returns: pointer to unsigned char array; NULL on error

Definition at line 128 of file geos_to_wktb.c.

◆ Vect_read_next_line()

int Vect_read_next_line	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

◆ Vect_region_box()

int Vect_region_box	(	const struct Cell_head *	Window,
		struct bound_box *	Box
	)

Copy region window to bounding box.

Parameters

	Window	region structure (raster-based)
[out]	Box	boundary box (vector-based)

Returns: 1 on success; 0 on error

Definition at line 461 of file vector/Vlib/box.c.

References Box, Cell_head::east, Cell_head::north, PORT_DOUBLE_MAX, Cell_head::south, and Cell_head::west.

Referenced by P_Mean_Calc().

◆ Vect_remove_bridges()

void Vect_remove_bridges	(	struct Map_info *	Map,
		struct Map_info *	Err,
		int *	lines_removed,
		int *	bridges_removed
	)

Remove bridges from vector map.

Remove bridges (type boundary) connecting areas to islands or 2 islands. Islands and areas must be already clean, i.e. without dangles. Bridge may be formed by more lines. Optionally deleted bridges are written to error map. Input map must be opened on level 2 for update at least on level GV_BUILD_BASE

Parameters

Map	input map where bridges are deleted
Err	vector map where deleted bridges are written or NULL
lines_removed	number of lines removed
bridges_removed	Err number of bridges removed

Definition at line 48 of file bridges.c.

◆ Vect_remove_colors()

int Vect_remove_colors	(	const char *	name,
		const char *	mapset
	)

Remove color table of raster map.

Parameters

name	name of raster map
mapset	name of mapset

Returns: -1 on error; 0 color table not found; 1 on success

Definition at line 29 of file vector/Vlib/color_remove.c.

References G_mapset(), G_name_is_fully_qualified(), G_remove(), GMAPSET_MAX, GNAME_MAX, GPATH_MAX, GV_COLR2_DIRECTORY, GV_COLR_ELEMENT, GV_DIRECTORY, and name.

◆ Vect_remove_constraints()

void Vect_remove_constraints ( struct Map_info * Map )

Remove all constraints.

Parameters

Map	pointer to Map_info struct

Definition at line 122 of file constraint.c.

References Map_info::constraint, FALSE, Map_info::field_flag, Map_info::region_flag, and Map_info::type_flag.

◆ Vect_remove_dangles()

void Vect_remove_dangles	(	struct Map_info *	Map,
		int	type,
		double	maxlength,
		struct Map_info *	Err
	)

Remove dangles from vector map.

Remove dangles of given type shorter than maxlength from vector map.

Line is considered to be a dangle if on at least one end node is no other line of given type(s). If a dangle is formed by more lines, such string of lines is taken as one dangle and either deleted are all parts or nothing.

Optionally deleted dangles are written to error map.

Input map must be opened on level 2 for update.

Parameters

	Map	input map where have to be deleted
	type	type of dangles (GV_LINES, GV_LINE or GV_BOUNDARY)
	maxlength	maxlength of dangles or -1 for all dangles
[out]	Err	vector map where deleted dangles are written or NULL

Returns

Definition at line 49 of file dangles.c.

◆ Vect_remove_duplicates()

void Vect_remove_duplicates	(	struct Map_info *	Map,
		int	type,
		struct Map_info *	Err
	)

Remove duplicate features from vector map.

Remove duplicate lines of given types from vector map. Duplicate lines may be optionally written to error map. Input map must be opened on level 2 for update. Categories are merged. GV_BUILD_BASE is sufficient.

Parameters

[in,out]	Map	vector map where duplicate lines will be deleted
	type	type of line to be delete
[out]	Err	vector map where duplicate lines will be written or NULL

Returns: void

Definition at line 69 of file remove_duplicates.c.

◆ Vect_remove_small_areas()

int Vect_remove_small_areas	(	struct Map_info *	Map,
		double	thresh,
		struct Map_info *	Err,
		double *	removed_area
	)

Remove small areas from the map map.

Centroid of the area and the longest boundary with adjacent area is removed. Map topology must be built GV_BUILD_CENTROIDS.

Parameters

[in,out]	Map	vector map
	thresh	maximum area size for removed areas
[out]	Err	vector map where removed lines and centroids are written
	removed_area	pointer to where total size of removed area is stored or NULL

Returns: number of removed areas

Definition at line 41 of file remove_areas.c.

References Map_info::format, GV_FORMAT_NATIVE, Vect_remove_small_areas_ext(), and Vect_remove_small_areas_nat().

◆ Vect_rename()

int Vect_rename	(	const char *	in,
		const char *	out
	)

Rename existing vector map (in the current mapset).

Attribute tables are created in the same database where input tables were stored.

The original format (native/OGR) is used.

Note: Output vector map is overwritten if exists!

Parameters

in	name of vector map to be renamed
out	name for output vector map

Returns: -1 error; 0 success

Definition at line 233 of file map.c.

Referenced by M_do_rename().

◆ Vect_reset_boxlist()

int Vect_reset_boxlist ( struct boxlist * list )

Reset boxlist structure.

To make sure boxlist structure is clean to be re-used. List must have previously been created with Vect_new_boxlist().

Parameters

[in,out] list pointer to struct boxlist

Returns: 0

Definition at line 251 of file vector/Vlib/list.c.

◆ Vect_reset_cats()

int Vect_reset_cats ( struct line_cats * Cats )

Reset category structure to make sure cats structure is clean to be re-used.

I.e. it has no cats associated with it. Cats must have previously been created with Vect_new_cats_struct()

Parameters

[out] Cats line_cats structure

Returns: 0

Definition at line 296 of file vector/Vlib/cats.c.

References line_cats::n_cats.

Referenced by Vect_get_area_cat(), and Vect_get_area_cats().

◆ Vect_reset_dblinks()

void Vect_reset_dblinks ( struct dblinks * p )

Reset dblinks structure (number of fields)

Parameters

p	pointer to existing dblinks structure

Definition at line 101 of file field.c.

References dblinks::n_fields.

Referenced by Vect_read_dblinks().

◆ Vect_reset_line()

void Vect_reset_line ( struct line_pnts * Points )

Reset line.

Make sure line structure is clean to be re-used, i.e. it has no points associated with it Points must have previously been created with Vect_new_line_struct().

Parameters

Points pointer to line_pnts structure to be reset

Definition at line 129 of file line.c.

Referenced by Vect__get_area_points_pg(), Vect_get_area_points(), and Vect_get_isle_points().

◆ Vect_reset_list()

int Vect_reset_list ( struct ilist * list )

Reset ilist structure.

To make sure ilist structure is clean to be re-used. List must have previously been created with Vect_new_list().

Parameters

[in,out] list pointer to struct ilist

Returns: 0

Definition at line 56 of file vector/Vlib/list.c.

Referenced by Vect_field_cat_get(), Vect_select_areas_by_polygon(), Vect_select_nodes_by_box(), and Vect_spatial_index_select().

◆ Vect_reset_updated()

void Vect_reset_updated ( struct Map_info * Map )

Reset list of updated lines/nodes.

Parameters

Map	pointer to Map_info struct

Definition at line 469 of file level_two.c.

◆ Vect_restore_line()

int Vect_restore_line	(	struct Map_info *	Map,
		off_t	offset,
		off_t	line
	)

Restore previously deleted feature (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

A warning is printed on error.

Parameters

Map	pointer to Map_info structure
offset	feature offset to be restored
line	feature id to be restored (used only on level 2)

Returns: 0 on success; -1 on error

Definition at line 309 of file vector/Vlib/write.c.

◆ Vect_rewind()

int Vect_rewind ( struct Map_info * Map )

Rewind vector map to cause reads to start at beginning.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 62 of file vector/Vlib/rewind.c.

References G_debug(), Map_info::level, Map_info::name, and VECT_OPEN.

◆ Vect_rewrite_line()

off_t Vect_rewrite_line	(	struct Map_info *	Map,
		off_t	line,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Rewrites existing feature (topological level required)

Note: Topology must be built at level >= GV_BUILD_BASE

A warning is printed on error.

The number of points or cats or type may change. If necessary, the old feature is deleted and new is written.

Parameters

Map	pointer to Map_info structure
line	feature id (level 2) or feature offset (level 1)
type	feature type (GV_POINT, GV_LINE, ...)
points	feature geometry
cats	feature categories

Returns: new feature id (on level 2) (or 0 when build level < GV_BUILD_BASE); offset into file where the feature starts (on level 1); -1 on error

Definition at line 238 of file vector/Vlib/write.c.

◆ Vect_save_fidx()

int Vect_save_fidx	(	struct Map_info *	Map,
		struct Format_info_offset *	offset
	)

Save feature index file for vector map.

Parameters

Map	pointer to Map_info structure
offset	pointer to Format_info_offset struct (see Format_info_ogr and Format_info_pg struct for implementation issues)

Returns: 1 on success; 0 on error

Definition at line 116 of file build_ogr.c.

References _, Format_info_offset::array, Format_info_offset::array_num, Plus_head::built, dig__byte_order_out(), dig__fwrite_port_C(), dig__fwrite_port_I(), dig__fwrite_port_L(), dig_file_init(), dig_init_portable(), dig_set_cur_port(), FALSE, gvfile::file, G_debug(), G_fatal_error(), G_mapset(), G_warning(), GPATH_MAX, GV_BUILD_ALL, GV_DIRECTORY, GV_FIDX_ELEMENT, Map_info::mapset, Map_info::name, NULL, Map_info::plus, Map_info::support_updated, and Vect__get_element_path().

Referenced by V2_close_ogr(), and V2_close_pg().

◆ Vect_save_frmt()

int Vect_save_frmt ( struct Map_info * Map )

Save format definition file for vector map.

Parameters

Map	pointer to Map_info structure

Returns: 1 on success; 0 on error

Definition at line 243 of file vector/Vlib/close.c.

References _, Format_info_pg::conninfo, Format_info_ogr::dsn, Map_info::fInfo, Map_info::format, G_fatal_error(), G_fopen_new(), G_verbose_message(), G_warning(), GPATH_MAX, GV_DIRECTORY, GV_FORMAT_OGR, GV_FORMAT_POSTGIS, GV_FRMT_ELEMENT, Format_info_ogr::layer_name, Map_info::name, NULL, Format_info::ogr, Format_info::pg, Format_info_pg::schema_name, and Format_info_pg::table_name.

Referenced by V1_close_ogr(), and V1_close_pg().

◆ Vect_save_sidx()

int Vect_save_sidx ( struct Map_info * Map )

Save spatial index file for vector map.

Parameters

Map	vector map

Returns: 1 on success; 0 on error

Definition at line 1261 of file build.c.

References _, dig__byte_order_out(), dig_file_init(), dig_init_portable(), dig_Wr_spidx(), FALSE, gvfile::file, G_debug(), G_warning(), GPATH_MAX, GV_SIDX_ELEMENT, NULL, Map_info::plus, Plus_head::Spidx_built, Plus_head::spidx_fp, Plus_head::Spidx_new, Plus_head::spidx_port, TRUE, Vect__get_element_path(), and Vect_get_name().

◆ Vect_save_topo()

int Vect_save_topo ( struct Map_info * Map )

Save topology file for vector map.

Parameters

Map	pointer to Map_info structure

Returns: 1 on success; 0 on error

Definition at line 1012 of file build.c.

References _, dig__byte_order_out(), dig_file_init(), dig_init_portable(), dig_write_plus_file(), gvfile::file, G_debug(), G_fopen_new(), G_warning(), GPATH_MAX, GV_TOPO_ELEMENT, Map_info::name, NULL, Map_info::plus, Plus_head::port, and Vect__get_path().

◆ Vect_segment_intersection()

int Vect_segment_intersection	(	double	ax1,
		double	ay1,
		double	az1,
		double	ax2,
		double	ay2,
		double	az2,
		double	bx1,
		double	by1,
		double	bz1,
		double	bx2,
		double	by2,
		double	bz2,
		double *	x1,
		double *	y1,
		double *	z1,
		double *	x2,
		double *	y2,
		double *	z2,
		int	with_z
	)

Check for intersect of 2 line segments.

Parameters

	ax1,ay1,az1,ax2,ay2,az2	input line a
	bx1,by1,bz1,bx2,by2,bz2	input line b
[out]	x1,y1,z1	intersection point1 (case 2-4)
[out]	x2,y2,z2	intersection point2 (case 2-4)
	with_z	use z coordinate (3D) (TODO)

Returns: 0 - do not intersect,; 1 - intersect at one point,; 2 - partial overlap,; 3 - a contains b,; 4 - b contains a,; 5 - identical

Definition at line 111 of file vector/Vlib/intersect.c.

◆ Vect_select_areas_by_box()

int Vect_select_areas_by_box	(	struct Map_info *	Map,
		const struct bound_box *	Box,
		struct boxlist *	list
	)

Select areas with bounding boxes by box.

Select areas whose boxes overlap specified box!!! It means that selected area may or may not overlap the box.

Parameters

	Map	vector map
	Box	bounding box
[out]	output	list, must be initialized

Returns: number of areas

Definition at line 121 of file sindex.c.

Referenced by Vect_find_area().

◆ Vect_select_areas_by_polygon()

int Vect_select_areas_by_polygon	(	struct Map_info *	Map,
		struct line_pnts *	Polygon,
		int	nisles,
		struct line_pnts **	Isles,
		struct ilist *	List
	)

Select areas by Polygon with optional isles.

Polygons should be closed, i.e. first and last points must be identical.

Parameters

	Map	vector map
	Polygon	outer ring
	nisles	number of islands or 0
	Isles	array of islands or NULL
[out]	list	output list, must be initialised

Returns: number of areas

Definition at line 317 of file sindex.c.

References G_debug(), GV_BOUNDARY, ilist::n_values, NULL, Vect_new_list(), Vect_reset_list(), and Vect_select_lines_by_polygon().

◆ Vect_select_dangles()

void Vect_select_dangles	(	struct Map_info *	Map,
		int	type,
		double	maxlength,
		struct ilist *	List
	)

Select dangles from vector map.

Remove dangles of given type shorter than maxlength from vector map.

Line is considered to be a dangle if on at least one end node is no other line of given type(s). If a dangle is formed by more lines, such string of lines is taken as one dangle.

Input map must be opened on level 2 for update.

Parameters

	Map	input map where have to be deleted
	type	type of dangles (GV_LINES, GV_LINE or GV_BOUNDARY)
	maxlength	maxlength of dangles or -1 for all dangles
[out]	List	list of selected features

Returns

Definition at line 98 of file dangles.c.

◆ Vect_select_isles_by_box()

int Vect_select_isles_by_box	(	struct Map_info *	Map,
		const struct bound_box *	Box,
		struct boxlist *	list
	)

Select isles with bounding boxes by box.

Select isles whose boxes overlap specified box!!! It means that selected isle may or may not overlap the box.

Parameters

	Map	vector map
	Box	bounding box
[out]	list	output list, must be initialized

Returns: number of isles

Definition at line 165 of file sindex.c.

References Box, dig_select_isles(), G_debug(), and Map_info::plus.

Referenced by Vect_attach_isles().

◆ Vect_select_lines_by_box()

int Vect_select_lines_by_box	(	struct Map_info *	Map,
		const struct bound_box *	Box,
		int	type,
		struct boxlist *	list
	)

Select lines with bounding boxes by box.

Select lines whose boxes overlap specified box!!! It means that selected line may or may not overlap the box.

Parameters

	Map	vector map
	Box	bounding box
	type	line type
[out]	list	output list, must be initialized

Returns: number of lines

Definition at line 32 of file sindex.c.

◆ Vect_select_lines_by_polygon()

int Vect_select_lines_by_polygon	(	struct Map_info *	Map,
		struct line_pnts *	Polygon,
		int	nisles,
		struct line_pnts **	Isles,
		int	type,
		struct ilist *	List
	)

Select lines by Polygon with optional isles.

Polygons should be closed, i.e. first and last points must be identical.

Parameters

	Map	vector map
	Polygon	outer ring
	nisles	number of islands or 0
	Isles	array of islands or NULL
	type	line type
[out]	list	output list, must be initialised

Returns: number of lines

Definition at line 220 of file sindex.c.

Referenced by Vect_select_areas_by_polygon().

◆ Vect_select_nodes_by_box()

int Vect_select_nodes_by_box	(	struct Map_info *	Map,
		const struct bound_box *	Box,
		struct ilist *	list
	)

Select nodes by box.

Parameters

	Map	vector map
	Box	bounding box
[out]	list	output list, must be initialized

Returns: number of nodes

Definition at line 187 of file sindex.c.

References Box, dig_select_nodes(), G_debug(), Map_info::plus, and Vect_reset_list().

Referenced by Vect_find_node().

◆ Vect_set_category_index_update()

void Vect_set_category_index_update ( struct Map_info * Map )

Set category index to be updated when vector is changed.

By default, category index is not updated if vector is changed, this function sets category index update.

WARNING: currently only category for elements is updated not for areas

Parameters

Map	vector map

Definition at line 561 of file map.c.

References Map_info::plus, TRUE, and Plus_head::update_cidx.

◆ Vect_set_comment()

int Vect_set_comment	(	struct Map_info *	Map,
		const char *	str
	)

Set comment or other info string in map header.

Parameters

Map	pointer to Map_info structure
str	comment or other info string

Returns: 0

Definition at line 438 of file vector/Vlib/header.c.

References dig_head::comment, G_free(), G_store(), and Map_info::head.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_constraint_field()

int Vect_set_constraint_field	(	struct Map_info *	Map,
		int	field
	)

Set constraint field.

Vect_read_next_line() will read only features of given type. Note that categories must be read otherwise this constraint is ignored. Constraint is ignored for random access - Vect_read_line().

Ignored for non-native vector formats.

Note: Field is called layer on user level.

Parameters

Map	pointer to Map_info struct
field	field number (-1 for all fields)

Returns: 0 on success; -1 invalid field

Definition at line 147 of file constraint.c.

References _, Map_info::constraint, FALSE, Map_info::field, Map_info::field_flag, Map_info::format, G_warning(), GV_FORMAT_NATIVE, and TRUE.

◆ Vect_set_constraint_region()

int Vect_set_constraint_region	(	struct Map_info *	Map,
		double	n,
		double	s,
		double	e,
		double	w,
		double	t,
		double	b
	)

Set constraint region.

Vect_read_next_line() will read only features inside of given region or features with overlapping bounding box.

Note: Constraint is ignored for random access - Vect_read_line().

Parameters

Map	pointer to Map_info struct
n,s,e,w,t,b	bbox definition (north, south, east, west, top, and bottom coordinates)

Returns: 0 on success; -1 on error (invalid region)

Definition at line 48 of file constraint.c.

◆ Vect_set_constraint_type()

int Vect_set_constraint_type	(	struct Map_info *	Map,
		int	type
	)

Set constraint type.

Vect_read_next_line() will read only features of given type. Constraint is ignored for random access - Vect_read_line().

Parameters

Map	pointer to Map_info struct
type	constraint feature type (GV_POINT, GV_LINE, ...)

Returns: 0 on success; -1 invalid feature type

Definition at line 106 of file constraint.c.

◆ Vect_set_date()

int Vect_set_date	(	struct Map_info *	Map,
		const char *	str
	)

Set date of digitization in map header.

Todo:: This should be coupled to DateTime functions to support time series

Parameters

Map	pointer to Map_info structure
str	date given as string

Returns: 0

Definition at line 299 of file vector/Vlib/header.c.

References dig_head::date, G_free(), G_store(), and Map_info::head.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_db_updated()

void Vect_set_db_updated ( struct Map_info * Map )

Rewrite 'dbln' file.

Should be used by GRASS modules which update database tables, so that other applications know that tables were changed and can reload data.

Parameters

Map	pointer to Map_info structure

Definition at line 990 of file field.c.

References _, G_fatal_error(), G_mapset(), G_strcasecmp(), Map_info::mapset, and Vect_write_dblinks().

◆ Vect_set_error_handler_io()

void Vect_set_error_handler_io	(	struct Map_info *	In,
		struct Map_info *	Out
	)

Define standard error handler for input and output vector maps.

This handler:

close input vector map on error
close and delete output vector map on error

Note: It's recommended to call this routine after Vect_open_old() or Vect_open_old2().

Parameters

In	pointer in Map_info struct (input vector map) or NULL
Out	pointer to Map_info struct (output vector map) or NULL

Definition at line 58 of file vector/Vlib/handler.c.

◆ Vect_set_map_date()

int Vect_set_map_date	(	struct Map_info *	Map,
		const char *	str
	)

Set date when the source map was originally produced in map header.

Parameters

Map	pointer to Map_info structure
str	date given as a string

Returns: 0

Definition at line 383 of file vector/Vlib/header.c.

References G_free(), G_store(), Map_info::head, and dig_head::source_date.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_map_name()

int Vect_set_map_name	(	struct Map_info *	Map,
		const char *	str
	)

Set map name in map header.

Parameters

Map	pointer to Map_info structure
str	map name to be set

Returns: 0

Definition at line 355 of file vector/Vlib/header.c.

References G_free(), G_store(), Map_info::head, and dig_head::map_name.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_open_level()

int Vect_set_open_level ( int level )

Predetermine level at which a vector map will be opened for reading.

If it can't open that level, the open will fail. The specified level must be set before any call to open. The default is to try to open the highest level possible, and keep stepping down until success.

NOTE: This should only be used to set when you wish to force a lower level open. If you require a higher level, then just check the return to verify the level instead of forcing it. This is because future releases will have higher levels which will be downward compatible and which your programs should support by default.

Parameters

level vector access level

Returns: 0 on success; 1 on error (invalid access level)

Definition at line 138 of file vector/Vlib/open.c.

◆ Vect_set_organization()

int Vect_set_organization	(	struct Map_info *	Map,
		const char *	str
	)

Set organization string in map header.

Parameters

Map	pointer to Map_info structure
str	organization name

Returns: 0

Definition at line 268 of file vector/Vlib/header.c.

References G_free(), G_store(), Map_info::head, and dig_head::organization.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_person()

int Vect_set_person	(	struct Map_info *	Map,
		const char *	str
	)

Set name of user who digitized the map in map header.

Parameters

Map	pointer to Map_info structure
str	user name

Returns: 0

Definition at line 327 of file vector/Vlib/header.c.

References G_free(), G_store(), Map_info::head, and dig_head::user_name.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_proj()

int Vect_set_proj	(	struct Map_info *	Map,
		int	proj
	)

Set projection in map header.

Supported projections:

PROJECTION_XY 0 - x,y (Raw imagery),
PROJECTION_UTM 1 - UTM Universal Transverse Mercator,
PROJECTION_LL 3 - Latitude-Longitude

Parameters

Map	pointer to Map_info structure
proj	projection code

Returns: 0

Definition at line 503 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::proj.

Referenced by Vect__init_head(), and Vect__read_head().

◆ Vect_set_release_support()

void Vect_set_release_support ( struct Map_info * Map )

Set spatial index to be released when vector is closed.

By default, the memory occupied by spatial index is not released.

Parameters

Map	vector map

Definition at line 545 of file map.c.

References Map_info::plus, Plus_head::release_support, and TRUE.

◆ Vect_set_scale()

int Vect_set_scale	(	struct Map_info *	Map,
		int	scale
	)

Set map scale in map header.

Parameters

Map	pointer to Map_info structure
scale	map scale

Returns: 0

Definition at line 411 of file vector/Vlib/header.c.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_thresh()

int Vect_set_thresh	(	struct Map_info *	Map,
		double	thresh
	)

Set threshold used for digitization in map header.

Parameters

Map	pointer to Map_info structure
thresh	threshold used for digitization

Returns: 0

Definition at line 571 of file vector/Vlib/header.c.

References dig_head::digit_thresh, G_debug(), and Map_info::head.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_set_updated()

void Vect_set_updated	(	struct Map_info *	Map,
		int	enable
	)

Enable/disable maintenance of list of updated lines/nodes.

See Plus_head.uplist for details.

Parameters

Map	pointer to Map_info struct
enable	TRUE/FALSE to enable/disable

Definition at line 454 of file level_two.c.

References G_debug(), and Map_info::name.

◆ Vect_set_varray_from_cat_list()

int Vect_set_varray_from_cat_list	(	struct Map_info *	Map,
		int	field,
		struct cat_list *	clist,
		int	type,
		int	value,
		struct varray *	varray
	)

Set values in 'varray' to 'value' from category list.

If category of object of given type is in clist (category list). type may be either: GV_AREA or: GV_POINT | GV_LINE | GV_BOUNDARY | GV_CENTROID

Array is not reset to zero before, but old values (if any > 0) are overwritten. Array must be initialised by Vect_new_varray() call.

Parameters

	Map	vector map
	field	layer number
	clist	list of categories
	type	feature type
	value	value to set up
[out]	varray	varray structure to modify

Returns: number of items set; -1 on error

Definition at line 124 of file array.c.

◆ Vect_set_varray_from_cat_string()

int Vect_set_varray_from_cat_string	(	struct Map_info *	Map,
		int	field,
		const char *	cstring,
		int	type,
		int	value,
		struct varray *	varray
	)

Set values in 'varray' to 'value' from category string.

If category of object of given type is in cstring (string representing category list like: '1,3,5-7'). type may be either: GV_AREA or: GV_POINT | GV_LINE | GV_BOUNDARY | GV_CENTROID

Array is not reset to zero before, but old values (if any > 0) are overwritten. Array must be initialised by Vect_new_varray() call.

Parameters

	Map	vector map
	field	layer number
	cstring	pointer to string with categories
	type	feature type
	value	value to set up
[out]	varray	varray structure to modify

Returns: number of items set; -1 on error

Definition at line 79 of file array.c.

Referenced by NetA_initialise_varray().

◆ Vect_set_varray_from_db()

int Vect_set_varray_from_db	(	struct Map_info *	Map,
		int	field,
		const char *	where,
		int	type,
		int	value,
		struct varray *	varray
	)

Set values in 'varray' to 'value' from DB (where statement)

I category of object of given type is in categories selected from DB based on where statement (given without where). type may be either: GV_AREA or: GV_POINT | GV_LINE | GV_BOUNDARY | GV_CENTROID

Array is not reset to zero before, but old values (if any > 0) are overwritten. Array must be initialised by Vect_new_varray() call.

Parameters

	Map	vector map
	field	layer number
	where	where statement
	type	feature type
	value	value to set up
[out]	varray	varray structure to modify

Returns: number of items set; -1 on error

Definition at line 242 of file array.c.

Referenced by NetA_initialise_varray().

◆ Vect_set_zone()

int Vect_set_zone	(	struct Map_info *	Map,
		int	zone
	)

Set projection zone in map header.

Parameters

Map	pointer to Map_info structure
zone	projection zone

Returns: 0

Definition at line 466 of file vector/Vlib/header.c.

References Map_info::head, and dig_head::plani_zone.

Referenced by Vect__init_head(), Vect__read_head(), Vect_copy_head_data(), and Vect_read_ascii_head().

◆ Vect_sfa_check_line_type()

int Vect_sfa_check_line_type	(	const struct line_pnts *	Points,
		int	type,
		SF_FeatureType	sftype,
		int	with_z
	)

Check SF type.

E.g. if type is GV_LINE with two or more segments and the start node is identical with the end node, and sftype is SF_LINEARRING, functions returns 1, otherwise 0.

Parameters

Points	pointer to line_pnts structure
type	feature type (GV_POINT, GV_LINE, ...)
sftype	SF type to be checked (SF_POINT, SF_LINE, ...)
with_z	non-zero value for 3D data

Returns: 1 if type is sftype; 0 type differs from sftype

Definition at line 114 of file simple_features.c.

◆ Vect_sfa_get_line_type()

SF_FeatureType Vect_sfa_get_line_type	(	const struct line_pnts *	Points,
		int	type,
		int	with_z
	)

Get SF type of given vector feature.

List of supported feature types:

GV_POINT -> SF_POINT
GV_LINE -> SF_LINESTRING
GV_LINE (closed) -> SF_LINEARRING
GV_BOUNDARY -> SF_POLYGON

Parameters

Points	pointer to line_pnts structure
type	feature type (see supported types above)
with_z	WITH_Z for 3D data

Returns: SF type identificator (see list of supported types); -1 on error

Definition at line 64 of file simple_features.c.

◆ Vect_sfa_get_num_features()

int Vect_sfa_get_num_features ( struct Map_info * Map )

Get number of simple features.

For native format or PostGIS Topology returns -1

Parameters

Map	vector map

Returns: number of features; -1 on error

Definition at line 300 of file simple_features.c.

References _, Format_info_pg::conn, DB_SQL_MAX, Map_info::fInfo, Map_info::format, G_fatal_error(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, Format_info_ogr::layer, Format_info::ogr, Format_info::pg, Format_info_pg::schema_name, Format_info_pg::table_name, Format_info_pg::toposchema_name, TRUE, Vect__execute_get_value_pg(), and Vect_get_full_name().

◆ Vect_sfa_get_type()

int Vect_sfa_get_type ( SF_FeatureType sftype )

Get relevant GV type.

Parameters

Map	pointer to Map_info structure
type	SF geometry type (SF_POINT, SF_LINESTRING, ...)

Returns: GV type; -1 on error

Definition at line 79 of file simple_features.c.

References GV_BOUNDARY, GV_LINE, GV_POINT, SF_LINEARRING, SF_LINESTRING, SF_LINESTRING25D, SF_POINT, SF_POINT25D, SF_POLYGON, and SF_POLYGON25D.

◆ Vect_sfa_is_line_closed()

int Vect_sfa_is_line_closed	(	const struct line_pnts *	Points,
		int	type,
		int	with_z
	)

Check if feature is closed.

Parameters

Points	pointer to line_pnts structure
type	feature type (GV_LINE or GV_BOUNDARY)

Returns: 1 feature closed; 0 feature not closed; -1 feature type not supported (GV_POINT, GV_CENTROID, ...)

Definition at line 271 of file simple_features.c.

◆ Vect_sfa_is_line_simple()

int Vect_sfa_is_line_simple	(	const struct line_pnts *	,
		int	,
		int
	)

◆ Vect_sfa_line_astext()

int Vect_sfa_line_astext	(	const struct line_pnts *	Points,
		int	type,
		int	with_z,
		int	precision,
		FILE *	file
	)

Export geometry to Well-Known Text.

Parameters

	Points	pointer to line_pnts structure
	type	feature type
	with_z	non-zero value for 3D data
	precision	floating number precision
[out]	file	file where to write the output

Returns: 0 on success; -1 unsupported feature type

Definition at line 188 of file simple_features.c.

◆ Vect_sfa_line_dimension()

int Vect_sfa_line_dimension ( int type )

Get geometry dimension.

Parameters

Points	pointer to line_pnts structure
type	feature type (GV_POINT, GV_LINE, ...)

Returns: 0 for GV_POINT; 1 for GV_LINE; 2 for GV_BOUNDARY; -1 unsupported feature type

Definition at line 131 of file simple_features.c.

◆ Vect_sfa_line_geometry_type()

char* Vect_sfa_line_geometry_type	(	const struct line_pnts *	Points,
		int	type
	)

Get geometry type (string)

Supported types:

GV_POINT -> SF_POINT -> "POINT"
GV_LINE -> SF_LINESTRING -> "LINESTRING"
GV_LINE (closed) -> SF_LINEARRING -> "LINEARRING"
GV_BOUNDARY (closed) -> SF_POLYGON -> "POLYGON"

Note: Allocated string should be freed by G_free().

Parameters

Points	pointer to line_pnts structure (feature geometry)
type	feature type (see supported types above)

Returns: geometry type string; NULL unsupported feature type

Definition at line 160 of file simple_features.c.

◆ Vect_sidx_dump()

int Vect_sidx_dump	(	struct Map_info *	Map,
		FILE *	out
	)

Dump spatial index to file.

Parameters

Map	vector map
out	file for output (stdout/stderr for example)

Returns: 1 on success; 0 on error

Definition at line 1315 of file build.c.

References dig_dump_spidx(), Map_info::plus, Plus_head::Spidx_built, and Vect_build_sidx_from_topo().

◆ Vect_snap_line()

int Vect_snap_line	(	struct Map_info *	Map,
		struct ilist *	reflist,
		struct line_pnts *	Points,
		double	thresh,
		int	with_z,
		int *	nsnapped,
		int *	ncreated
	)

Snap a line to reference lines in Map with threshold.

3D snapping is supported. The line to snap and the reference lines can but do not need to be in different vector maps.

Vect_snap_line() uses less memory, but is slower than Vect_snap_lines_list()

For details on snapping, see Vect_snap_lines_list()

Parameters

[in]	Map	input map with reference lines
[in]	reflist	list of reference lines
[in,out]	Points	line points to snap
[in]	thresh	threshold in which to snap vertices
[in]	with_z	2D or 3D snapping
[in,out]	nsnapped	number of snapped vertices
[in,out]	ncreated	number of new vertices (on segments)

Returns: 1 if line was changed, otherwise 0

Definition at line 949 of file Vlib/snap.c.

◆ Vect_snap_lines()

void Vect_snap_lines	(	struct Map_info *	Map,
		int	type,
		double	thresh,
		struct Map_info *	Err
	)

Snap lines in vector map to existing vertex in threshold.

For details see Vect_snap_lines_list()

Parameters

[in]	Map	input map where vertices will be snapped
[in]	type	type of lines to snap
[in]	thresh	threshold in which snap vertices
[out]	Err	vector map where lines representing snap are written or NULL

Returns: void

Definition at line 896 of file Vlib/snap.c.

◆ Vect_snap_lines_list()

void Vect_snap_lines_list	(	struct Map_info *	Map,
		const struct ilist *	List_lines,
		double	thresh,
		struct Map_info *	Err
	)

Snap selected lines to existing vertex in threshold.

Snap selected lines to existing vertices of other selected lines. 3D snapping is not supported.

Lines showing how vertices were snapped may be optionally written to error map. Input map must be opened on level 2 for update at least on GV_BUILD_BASE.

As mentioned above, lines are not necessarily snapped to nearest vertex! For example:

|
| 1         line 3 is snapped to line 1,
|           then line 2 is not snapped to common node at lines 1 and 3,
because it is already outside of threshold
----------- 3

|
| 2
|

The algorithm selects anchor vertices and snaps non-anchor vertices to these anchors. The distance between anchor vertices is always > threshold. If there is more than one anchor vertex within threshold around a non-anchor vertex, this vertex is snapped to the nearest anchor vertex within threshold.

Parameters

	Map	input map where vertices will be snapped
	List_lines	list of lines to snap
	thresh	threshold in which snap vertices
[out]	Err	vector map where lines representing snap are written or NULL

Returns: void

Definition at line 169 of file Vlib/snap.c.

◆ Vect_spatial_index_add_item()

void Vect_spatial_index_add_item	(	struct spatial_index *	si,
		int	id,
		const struct bound_box *	box
	)

Add a new item to spatial index structure.

Parameters

[in,out]	si	pointer to spatial index structure
	id	item identifier
	box	pointer to item bounding box

Returns: void

Definition at line 62 of file vector/Vlib/select.c.

References bound_box::B, RTree_Rect::boundary, bound_box::E, G_debug(), G_malloc, bound_box::N, RTree::nsides_alloc, RTreeInsertRect(), bound_box::S, spatial_index::si_tree, bound_box::T, and bound_box::W.

◆ Vect_spatial_index_del_item()

void Vect_spatial_index_del_item	(	struct spatial_index *	si,
		int	id,
		const struct bound_box *	box
	)

Delete item from spatial index structure.

Parameters

[in,out]	si	pointer to spatial index structure
	id	item identifier

Returns: void

Definition at line 92 of file vector/Vlib/select.c.

References _, bound_box::B, RTree_Rect::boundary, bound_box::E, G_debug(), G_fatal_error(), G_malloc, bound_box::N, RTree::nsides_alloc, RTreeDeleteRect(), bound_box::S, spatial_index::si_tree, bound_box::T, and bound_box::W.

◆ Vect_spatial_index_destroy()

void Vect_spatial_index_destroy ( struct spatial_index * si )

Destroy existing spatial index.

Vect_spatial_index_init() must be call before new use.

Parameters

si	pointer to spatial index structure

Returns: void

Definition at line 46 of file vector/Vlib/select.c.

References G_debug(), RTreeDestroyTree(), and spatial_index::si_tree.

◆ Vect_spatial_index_init()

void Vect_spatial_index_init	(	struct spatial_index *	si,
		int	with_z
	)

Initialize spatial index structure.

Parameters

si	pointer to spatial index structure

Returns: void

Definition at line 30 of file vector/Vlib/select.c.

References G_debug(), RTreeCreateTree(), and spatial_index::si_tree.

◆ Vect_spatial_index_select()

int Vect_spatial_index_select	(	const struct spatial_index *	si,
		const struct bound_box *	box,
		struct ilist *	list
	)

Select items by bounding box to list.

Parameters

	si	pointer to spatial index structure
	box	bounding box
[out]	list	pointer to list where selected items are stored

Returns: number of selected items

Definition at line 137 of file vector/Vlib/select.c.

References bound_box::B, RTree_Rect::boundary, bound_box::E, G_malloc, bound_box::N, RTree::nsides_alloc, RTreeSearch(), bound_box::S, spatial_index::si_tree, bound_box::T, Vect_reset_list(), and bound_box::W.

◆ Vect_str_to_cat_list()

int Vect_str_to_cat_list	(	const char *	str,
		struct cat_list *	list
	)

Converts string of categories and cat ranges separated by commas to cat_list.

Examples of string:

5,6,7
3-9
2,3,5-9,20

Example:

...
str = "2,3,5-9,20"
cat_list = Vect_new_cat_list()
 
Vect_str_to_cat_list(str, cat_list)

cat_list->field = 0
cat_list->n_ranges = 4
cat_list->min = {2, 3, 5, 20}
cat_list->max = {2, 3, 9, 20}

Parameters

	str	category list as a string
[in,out]	list	pointer to cat_list structure

Returns: number of errors in ranges

Definition at line 368 of file vector/Vlib/cats.c.

References err(), and l.

◆ Vect_subst_var()

char* Vect_subst_var	(	const char *	in,
		struct Map_info *	Map
	)

Substitute variable in string.

Parameters

in	current string
Map	pointer to Map_info structure

Returns: pointer to new string

Definition at line 931 of file field.c.

Referenced by Vect_get_dblink().

◆ Vect_tin_get_z()

int Vect_tin_get_z	(	struct Map_info *	,
		double	,
		double	,
		double *	,
		double *	,
		double *
	)

◆ Vect_topo_check()

int Vect_topo_check	(	struct Map_info *	Map,
		struct Map_info *	Err
	)

Extensive tests for correct topology.

lines or boundaries of zero length
intersecting boundaries, ie. overlapping areas
areas without centroids that are not isles

Parameters

	Map	vector map
[out]	Err	vector map where errors will be written or NULL

Returns: 1 on success; 0 on error

Definition at line 604 of file build.c.

◆ Vect_topo_dump()

int Vect_topo_dump	(	struct Map_info *	Map,
		FILE *	out
	)

Dump topology to file.

Parameters

Map	vector map
out	file for output (stdout/stderr for example)

Returns: 1 on success; 0 on error

Definition at line 1054 of file build.c.

◆ Vect_val_in_boxlist()

int Vect_val_in_boxlist	(	const struct boxlist *	list,
		int	id
	)

Find a given item in the list.

Parameters

list	pointer to boxlist structure
id	value of item

Returns: 1 if an item is found; 0 no found item in the list

Definition at line 417 of file vector/Vlib/list.c.

References NULL.

◆ Vect_val_in_list()

int Vect_val_in_list	(	const struct ilist *	list,
		int	val
	)

Find a given item in the list.

Parameters

list	pointer to ilist structure
val	value of item

Returns: 1 if an item is found; 0 no found item in the list

Definition at line 196 of file vector/Vlib/list.c.

References NULL.

◆ Vect_write_ascii()

int Vect_write_ascii	(	FILE *	ascii,
		FILE *	att,
		struct Map_info *	Map,
		int	ver,
		int	format,
		int	dp,
		char *	fs,
		int	region_flag,
		int	type,
		int	field,
		const struct cat_list *	Clist,
		const char *	where,
		const char **	column_names,
		int	header
	)

Write data to GRASS ASCII vector format.

Prints message if some features without category are skipped.

Parameters

[out]	ascii	pointer to the output ASCII file
[out]	att	att file (< version 5 only)
	Map	pointer to Map_info structure
	ver	version number 4 or 5
	format	format GV_ASCII_FORMAT_POINT or GV_ASCII_FORMAT_STD
	dp	number of significant digits
	fs	field separator
	region_flag	check region
	type	feature type filter
	field	field number
	Clist	list of categories to filter features or NULL
	where	SQL select where statement to filter features or NULL
	column_names	array of columns to be included to the output or NULL "*" as the first item in the array indicates all columns
	header	TRUE to print also header

Returns: number of written features; -1 on error

Definition at line 337 of file ascii.c.

◆ Vect_write_ascii_head()

void Vect_write_ascii_head	(	FILE *	dascii,
		struct Map_info *	Map
	)

Write data to GRASS ASCII vector format.

Parameters

[out]	dascii	pointer to the output ASCII file
	Map	pointer to Map_info structure

Definition at line 945 of file ascii.c.

References HOST_NEWLINE, Vect_get_comment(), Vect_get_date(), Vect_get_map_date(), Vect_get_map_name(), Vect_get_organization(), Vect_get_person(), Vect_get_scale(), Vect_get_thresh(), and Vect_get_zone().

◆ Vect_write_colors()

void Vect_write_colors	(	const char *	name,
		const char *	mapset,
		struct Colors *	colors
	)

Write color table for vector map.

The color table is written for the vector map name in the specified mapset from the colors structure.

The colors structure must be created properly, i.e., Rast_init_colors() to initialize the structure and Rast_add_c_color_rule() to set the category colors. These routines are called by higher level routines which read or create entire color tables, such as Rast_read_colors() or Rast_make_ramp_colors().

Note: The calling sequence for this function deserves special attention. The mapset parameter seems to imply that it is possible to overwrite the color table for a vector map which is in another mapset. However, this is not what actually happens. It is very useful for users to create their own color tables for vector maps in other mapsets, but without overwriting other users' color tables for the same raster map. If mapset is the current mapset, then the color file for name will be overwritten by the new color table. But if mapset is not the current mapset, then the color table is actually written in the current mapset under the colr2 element as: vector/name/colr2.

The rules are written out using floating-point format, removing trailing zeros (possibly producing integers). The flag marking the colors as floating-point is not written.

If the environment variable FORCE_GRASS3_COLORS is set (to anything at all) then the output format is 3.0, even if the structure contains 4.0 rules. This allows users to create 3.0 color files for export to sites which don't yet have 4.0

Parameters

name	vector map name
mapset	mapset name
colors	pointer to structure Colors which holds color info

Returns: void

Definition at line 61 of file vector/Vlib/color_write.c.

◆ Vect_write_dblinks()

int Vect_write_dblinks ( struct Map_info * Map )

Write dblinks to file.

Parameters

Map	pointer to Map_info structure

Returns: 0 on success; -1 on error

Definition at line 878 of file field.c.

References _, field_info::database, Map_info::dblnk, field_info::driver, dblinks::field, Map_info::format, G_debug(), G_fopen_new(), G_warning(), GPATH_MAX, GV_DBLN_ELEMENT, GV_FORMAT_NATIVE, field_info::key, Map_info::mapset, dblinks::n_fields, field_info::name, Map_info::name, NULL, field_info::number, field_info::table, Vect__get_path(), and Vect_get_name().

Referenced by V1_close_nat(), Vect_map_del_dblink(), and Vect_set_db_updated().

◆ Vect_write_header()

int Vect_write_header ( struct Map_info * Map )

Write vector map header to map head file.

Parameters

Map	pointer to Map_info structure

Returns: 0

Definition at line 64 of file vector/Vlib/header.c.

References Vect__write_head().

◆ Vect_write_line()

off_t Vect_write_line	(	struct Map_info *	Map,
		int	type,
		const struct line_pnts *	points,
		const struct line_cats *	cats
	)

Writes a new feature.

New feature is written to the end of file (in the case of native format). Topological level is not required.

A warning is printed on error.

Parameters

Map	pointer to Map_info structure
type	feature type (see dig_defines.h for supported types)
points	pointer to line_pnts structure (feature geometry)
cats	pointer to line_cats structure (feature categories)

Returns: new feature id (on level 2) (or 0 when build level < GV_BUILD_BASE); offset into file where the feature starts (on level 1); -1 on error

Definition at line 196 of file vector/Vlib/write.c.

	Points	input line geometry
	da	distance along major axis
	db	distance along minor axis
	dalpha	angle between 0x and major axis
	round	make corners round (0 - square, not 0 - round)
	caps	add caps at line ends (0 - butt, not 0 - caps)
	tol	maximum distance between theoretical arc and output segments
[out]	oPoints	output polygon outer border (ccw order)
[out]	iPoints	array of output polygon's holes (cw order)
[out]	inner_count	number of holes

	Map	pointer Map_info struct
[out]	line_p	feature geometry (pointer to line_pnts struct)
[out]	line_c	feature categories (pointer to line_cats struct)

Functions

Function Documentation

◆ RTreeSearch2()

◆ V1_close_nat()

◆ V1_close_ogr()

◆ V1_close_pg()

◆ V1_delete_line_nat()

◆ V1_delete_line_ogr()

◆ V1_delete_line_pg()

◆ V1_open_new_nat()

◆ V1_open_new_ogr()

◆ V1_open_new_pg()

◆ V1_open_old_nat()

◆ V1_open_old_ogr()

◆ V1_open_old_pg()

◆ V1_read_line_nat()

◆ V1_read_line_ogr()

◆ V1_read_line_pg()

◆ V1_read_next_line_nat()

◆ V1_read_next_line_ogr()

◆ V1_read_next_line_pg()

◆ V1_restore_line_nat()

◆ V1_rewind_nat()

◆ V1_rewind_ogr()

◆ V1_rewind_pg()

◆ V1_rewrite_line_nat()

◆ V1_rewrite_line_ogr()

◆ V1_rewrite_line_pg()

◆ V1_write_line_nat()

◆ V1_write_line_ogr()

◆ V1_write_line_pg()

◆ V2_close_ogr()

◆ V2_close_pg()

◆ V2_delete_line_nat()

◆ V2_delete_line_pg()

◆ V2_delete_line_sfa()

◆ V2_open_old_ogr()

◆ V2_open_old_pg()

◆ V2_read_line_nat()

◆ V2_read_line_pg()

◆ V2_read_line_sfa()

◆ V2_read_next_line_nat()

◆ V2_read_next_line_ogr()

◆ V2_read_next_line_pg()

◆ V2_restore_line_nat()

◆ V2_rewind_nat()

◆ V2_rewind_ogr()

◆ V2_rewind_pg()

◆ V2_rewrite_line_nat()

◆ V2_rewrite_line_pg()

◆ V2_rewrite_line_sfa()

◆ V2_write_line_nat()

◆ V2_write_line_pg()

◆ V2_write_line_sfa()

◆ V__map_overlap()

◆ Vect__build_downgrade()

◆ Vect__build_sfa()

◆ Vect__init_head()

◆ Vect__intersect_line_with_poly()

◆ Vect__read_head()

◆ Vect__write_head()

◆ Vect_add_dblink()

◆ Vect_append_point()

◆ Vect_append_points()

◆ Vect_area_alive()

◆ Vect_area_buffer2()

◆ Vect_array_to_cat_list()

◆ Vect_attach_centroids()

◆ Vect_attach_isle()

◆ Vect_attach_isles()

◆ Vect_box_clip()

◆ Vect_box_copy()

◆ Vect_box_extend()

◆ Vect_box_overlap()

◆ Vect_boxlist_append()

◆ Vect_boxlist_append_boxlist()

◆ Vect_boxlist_delete()

◆ Vect_boxlist_delete_boxlist()

◆ Vect_break_lines()

◆ Vect_break_lines_list()