write_sfa.c File Reference

Vector library - write vector feature - simple feature access (level 2) More...

#include <grass/vector.h>
#include <grass/glocale.h>
#include "local_proto.h"
#include "pg_local_proto.h"

Include dependency graph for write_sfa.c:

Go to the source code of this file.

Functions
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) More...
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) More...
int	V2_delete_line_sfa (struct Map_info *Map, off_t line)
	Deletes feature on level 2 (OGR/PostGIS interface) More...
off_t	V2__write_area_sfa (struct Map_info *Map, const struct line_pnts **points, int nparts, const struct line_cats *cats)
	Writes area on topological level (Simple Features interface, internal use only) More...

Detailed Description

Vector library - write vector feature - simple feature access (level 2)

Higher level functions for reading/writing/manipulating vectors.

See write_ogr.c (OGR interface) and write_pg.c (PostGIS interface) for implementation issues.

Todo:

SFA version of V2__delete_area_cats_from_cidx_nat()

function to delete corresponding entry in fidx

SFA version of V2__add_area_cats_to_cidx_nat

SFA version of V2__add_line_to_topo_nat

(C) 2011-2012 by Martin Landa, and the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

Martin Landa <landa.martin gmail.com>

Definition in file write_sfa.c.

Function Documentation

V2__write_area_sfa()

off_t V2__write_area_sfa	(	struct Map_info *	Map,
		const struct line_pnts **	points,
		int	nparts,
		const struct line_cats *	cats
	)

Writes area on topological level (Simple Features interface, internal use only)

Parameters

Map	pointer to Map_info structure
points	feature geometry (exterior + interior rings)
nparts	number of parts including exterior ring
cats	feature categories

Returns

feature offset

-1 on error

Definition at line 293 of file write_sfa.c.

References _, Map_info::format, G_fatal_error(), G_warning(), GV_FORMAT_OGR, GV_FORMAT_POSTGIS, V2__write_area_ogr(), and V2__write_area_pg().

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_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_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.