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Sometimes I have the same problem.<div><br></div><div>My solution is to use the georectify module to set the GPCs, save, close it and then run:</div><div>i.group - i.target - i.rectfy.</div><div>It's fail safe.<br><br>Pablo Torres Carreira
<br><br><br><br>> From: sedwards2@cinci.rr.com<br>> Date: Wed, 6 Oct 2010 09:23:17 -0400<br>> To: grass-user@lists.osgeo.org<br>> Subject: [GRASS-user] help with georectify<br>> <br>> Hi ~<br>> <br>> GRASS 6.4.0 / OS X 10.6.4 and 10.5.8 (PPC) with wxpython<br>> <br>> I'm having a problem with the georectify module - which is strange since I've used it a lot in the past without any problems; although maybe not since I upgraded to this GRASS version - hard to remember. The module executes smoothly through the selection of GCPs and will compute an rms error. However, when the georectify button is activated I get an error message stating that the Group does not exist. Right above this message is a line from i.points stating that the points file was saved for this group -- i.e. <br>> <br>> POINTS file </Users/stu/grassdata/xy2/PERMANENT/group/sheet9/POINTS> saved <br>> (Wed Oct 6 09:03:44 2010) <br>> i.rectify -a group=sheet9 extension=georect64214 order=1 <br>> ERROR: Group <sheet9> does not exist<br>> (Wed Oct 6 09:03:44 2010) Command finished (0 sec) <br>> <br>> This looks a little like a bug that was identified last year and fixed (# 689 / # 709)<br>> <br>> BTW, what is the complex 'extension' and why is the auto-generated value so 'complex' <br>> <br>> Thanks for any assistance .......<br>> <br>> Stu_______________________________________________<br>> grass-user mailing list<br>> grass-user@lists.osgeo.org<br>> http://lists.osgeo.org/mailman/listinfo/grass-user<br></div> </body>
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