sample.c File Reference

#include <string.h>
#include <unistd.h>
#include <math.h>
#include <grass/gis.h>
#include <grass/glocale.h>

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Functions
double	G_get_raster_sample (int fd, struct Cell_head *window, struct Categories *cats, double north, double east, int usedesc, INTERP_TYPE itype)
	extract a cell value from raster map at given northing and easting with a sampled 3x3 window using a specified interpolation method

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Function Documentation

double G_get_raster_sample	(	int	fd,
		struct Cell_head *	window,
		struct Categories *	cats,
		double	north,
		double	east,
		int	usedesc,
		INTERP_TYPE	itype
	)

extract a cell value from raster map at given northing and easting with a sampled 3x3 window using a specified interpolation method

double G_get_raster_sample (int fd, struct Cell_head *window, struct Categories *cats, double north, double east, int usedesc, INTERP_TYPE itype)

Parameters:

	fd	file descriptor
	window
	cats	categories
	north	northing position
	east	easting position
	usedesc	flag to scan category label
	itype	interpolation method

Returns:

cell value at given position

Definition at line 54 of file sample.c.

References G_fatal_error().

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