GRASS GIS 7 Programmer's Manual  7.9.dev(2020)-f4bc66038
proj1.c File Reference

GIS Library - Projection support (window related) More...

#include <grass/gis.h>
Include dependency graph for proj1.c:

Go to the source code of this file.

Functions

int G_projection (void)
 Query cartographic projection. More...
 

Detailed Description

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

Definition in file proj1.c.

Function Documentation

◆ G_projection()

int G_projection ( void  )

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.

Returns
projection code (see above)

Definition at line 32 of file proj1.c.

References G_get_set_window(), and Cell_head::proj.

Referenced by G_database_projection_name(), G_database_unit(), G_get_projepsg(), G_get_projinfo(), G_get_projunits(), G_shortest_way(), and Rast__check_for_auto_masking().