[GRASS-SVN] r50641 - grass/trunk/vector/v.rectify

[svn_grass at osgeo.org]

Author: mmetz
Date: 2012-02-03 02:00:37 -0800 (Fri, 03 Feb 2012)
New Revision: 50641

Modified:
   grass/trunk/vector/v.rectify/main.c
   grass/trunk/vector/v.rectify/v.rectify.html
Log:
update manual, add message

Modified: grass/trunk/vector/v.rectify/main.c
===================================================================
--- grass/trunk/vector/v.rectify/main.c	2012-02-03 09:36:14 UTC (rev 50640)
+++ grass/trunk/vector/v.rectify/main.c	2012-02-03 10:00:37 UTC (rev 50641)
@@ -244,6 +244,7 @@
     if (!no_topo->answer)
 	Vect_build(&Out);
     /* Copy tables */
+    G_message(_("Copying attribute table(s)..."));
     if (Vect_copy_tables(&In, &Out, 0))
         G_warning(_("Failed to copy attribute table to output map"));
     Vect_close(&Out);

Modified: grass/trunk/vector/v.rectify/v.rectify.html
===================================================================
--- grass/trunk/vector/v.rectify/v.rectify.html	2012-02-03 09:36:14 UTC (rev 50640)
+++ grass/trunk/vector/v.rectify/v.rectify.html	2012-02-03 10:00:37 UTC (rev 50641)
@@ -8,6 +8,14 @@
 system than before it was rectified).
 
 <p>
+Great care should be taken with the placement of Ground Control Points. 
+For 2D transformation, the control points must not lie on a line, instead 
+3 of the control points must form a triangle. For 3D transformation, the 
+control points must not lie on a plane, instead 4 of the control points 
+must form a triangular pyramid. It is recommended to investigate RMS 
+errors and deviations of the Ground Control Points prior to transformation.
+
+<p>
 2D Ground Control Points can be identified in 
 <em><a href="i.points.html">i.points</a></em>
 or