GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-b4187339ee
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#include <stdio.h>
#include <math.h>
#include <unistd.h>
#include <grass/gis.h>
#include <grass/vector.h>
#include <grass/dbmi.h>
#include <grass/interpf.h>
Go to the source code of this file.
Macros | |
#define | POINT2D_C |
Functions | |
int | IL_check_at_points_2d (struct interp_params *params, struct quaddata *data, double *b, double *ertot, double zmin, double dnorm, struct triple *skip_point) |
int | IL_write_point_2d (struct triple point, double err) |
A function to write out point and deviation at point to database. More... | |
Definition in file point2d.c.
int IL_check_at_points_2d | ( | struct interp_params * | params, |
struct quaddata * | data, | ||
double * | b, | ||
double * | ertot, | ||
double | zmin, | ||
double | dnorm, | ||
struct triple * | skip_point | ||
) |
Checks if interpolating function interp() evaluates correct z-values at given points. If smoothing is used calculate the maximum error caused by smoothing.
ertot is a RMS deviation of the interpolated surface.
data | current region |
b | solution of linear equations |
ertot | total error |
zmin | min z-value |
int IL_write_point_2d | ( | struct triple | point, |
double | err | ||
) |
A function to write out point and deviation at point to database.
point | point to write out |
error | deviation at point |
Definition at line 164 of file point2d.c.
References Cats2, count, db_append_string(), db_close_database(), db_execute_immediate(), db_get_string(), DB_OK, db_shutdown_driver(), db_zero_string(), driver2, err(), ff, G_debug(), G_fatal_error(), GV_POINT, Map2, Pnts, sql2, field_info::table, Vect_append_point(), Vect_cat_set(), Vect_reset_cats(), Vect_reset_line(), Vect_write_line(), triple::x, triple::y, and triple::z.