[GRASS-SVN] r65493 - grass/trunk/vector/v.to.3d

[svn_grass at osgeo.org]

Author: annakrat
Date: 2015-06-16 19:29:17 -0700 (Tue, 16 Jun 2015)
New Revision: 65493

Modified:
   grass/trunk/vector/v.to.3d/trans3.c
   grass/trunk/vector/v.to.3d/v.to.3d.html
Log:
v.to.3d: make reverse transformation possible also for lines - contours

Modified: grass/trunk/vector/v.to.3d/trans3.c
===================================================================
--- grass/trunk/vector/v.to.3d/trans3.c	2015-06-17 02:26:02 UTC (rev 65492)
+++ grass/trunk/vector/v.to.3d/trans3.c	2015-06-17 02:29:17 UTC (rev 65493)
@@ -105,7 +105,7 @@
 			"Using category %d."), line, cat);
 	}
 
-	if (zcolumn && ltype == GV_POINT && cat > -1) {
+	if (zcolumn && ltype & (GV_POINT | GV_LINE) && cat > -1) {
 	    /* category exist in table ? */
 	    cex = (int *)bsearch((void *)&cat, cats, ncats, sizeof(int),
 				 srch);

Modified: grass/trunk/vector/v.to.3d/v.to.3d.html
===================================================================
--- grass/trunk/vector/v.to.3d/v.to.3d.html	2015-06-17 02:26:02 UTC (rev 65492)
+++ grass/trunk/vector/v.to.3d/v.to.3d.html	2015-06-17 02:29:17 UTC (rev 65493)
@@ -14,6 +14,11 @@
 
 When transforming 2D vector features to 3D based on attribute, all
 NULL values are silently converted to height 0.0.
+<p>
+Reverse transformation is possible for points and lines.
+In case of lines, the reverse transformation should be used
+only when all vertices of a line have the same z-coordinate
+(for example contours).
 
 <h2>EXAMPLES</h2>