wind_in.c File Reference

Point in region functions. More...

#include <grass/gis.h>

Include dependency graph for wind_in.c:

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Functions
int	G_point_in_region (double easting, double northing)
	Returns TRUE if coordinate is within the current region settings. More...
int	G_point_in_window (double easting, double northing, const struct Cell_head *window)
	Returns TRUE if coordinate is within the given map region. More...

Detailed Description

Point in region functions.

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

Author

Hamish Bowman. (c) Hamish Bowman, and the GRASS Development Team

Date

February 2007

Definition in file wind_in.c.

Function Documentation

int G_point_in_region	(	double	easting,
		double	northing
	)

Returns TRUE if coordinate is within the current region settings.

Parameters

easting
northing

Returns

int

Definition at line 26 of file wind_in.c.

References G_get_window(), and G_point_in_window().

int G_point_in_window	(	double	easting,
		double	northing,
		const struct Cell_head *	window
	)

Returns TRUE if coordinate is within the given map region.

Use instead of G_point_in_region() when used in a loop (it's more efficient to only fetch the window once) or for checking if a point is in another region (e.g. contained with a raster map's bounds).

Parameters

easting
northing
window

Returns

int

Definition at line 51 of file wind_in.c.

References FALSE, and TRUE.

Referenced by G_point_in_region().