[GRASS-SVN] r54720 - grass/trunk/lib/gis

svn_grass at osgeo.org svn_grass at osgeo.org
Sun Jan 20 10:06:57 PST 2013


Author: wenzeslaus
Date: 2013-01-20 10:06:56 -0800 (Sun, 20 Jan 2013)
New Revision: 54720

Modified:
   grass/trunk/lib/gis/area.c
Log:
libgis: noting necessary call in documentation

Modified: grass/trunk/lib/gis/area.c
===================================================================
--- grass/trunk/lib/gis/area.c	2013-01-20 17:19:29 UTC (rev 54719)
+++ grass/trunk/lib/gis/area.c	2013-01-20 18:06:56 UTC (rev 54720)
@@ -148,7 +148,10 @@
  * planimetric grids.  If the units for <i>x,y</i> are meters, then
  * the area is in square meters.  If the units are feet, then the area
  * is in square feet, and so on.
- * 
+ *
+ * You should call G_begin_polygon_area_calculations() function before
+ * calling this function.
+ *
  * <b>Note:</b> If the database is planimetric with the non-meter grid, 
  * this routine performs the required unit conversion to produce square 
  * meters.



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