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proj1.c
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/*!
\file lib/gis/proj1.c
\brief GIS Library - Projection support (window related)
(C) 2001-2011 by 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 Original author CERL
*/
#include <grass/gis.h>
/*!
\brief Query cartographic projection
This routine returns a code indicating the projection for the active
region. The current values are (see gis.h)
- PROJECTION_XY 0 - x,y (Raw imagery)
- PROJECTION_UTM 1 - UTM Universal Transverse Mercator
- PROJECTION_SP 2 - State Plane (in feet) - not used, removed
- PROJECTION_LL 3 - Latitude-Longitude
- PROJECTION_OTHER 99 - others
Others may be added in the future.
\return projection code (see above)
*/
int G_projection(void)
{
struct Cell_head window;
G_get_set_window(&window);
return window.proj;
}
G_get_set_window
void G_get_set_window(struct Cell_head *window)
Get the current working window (region).
Definition gis/set_window.c:35
G_projection
int G_projection(void)
Query cartographic projection.
Definition proj1.c:32