[GRASS-user] help with georectify

[Pablo Carreira]

Sometimes I have the same problem.
My solution is to use the georectify module to set the GPCs, save, close it and then run:i.group - i.target - i.rectfy.It's fail safe.

Pablo Torres Carreira




> From: sedwards2 at cinci.rr.com
> Date: Wed, 6 Oct 2010 09:23:17 -0400
> To: grass-user at lists.osgeo.org
> Subject: [GRASS-user] help with georectify
> 
> Hi ~
> 
> GRASS 6.4.0 / OS X 10.6.4 and 10.5.8 (PPC) with wxpython
> 
> 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.  
> 
> POINTS file </Users/stu/grassdata/xy2/PERMANENT/group/sheet9/POINTS> saved      
> (Wed Oct  6 09:03:44 2010)                                                      
> i.rectify -a group=sheet9 extension=georect64214 order=1                        
> ERROR: Group <sheet9> does not exist
> (Wed Oct  6 09:03:44 2010) Command finished (0 sec)                             
> 
> This looks a little like a bug that was identified last year and fixed (# 689 / # 709)
> 
> BTW, what is the complex 'extension' and why  is the auto-generated value so 'complex'   
> 
> Thanks for any assistance .......
> 
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