[GRASS-dev] Re: [GRASS GIS] #632: Thematic Maps

GRASS GIS trac at osgeo.org
Sat Mar 6 10:42:19 EST 2010


#632: Thematic Maps
-----------------------+----------------------------------------------------
  Reporter:  voncasec  |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect    |      Status:  new                      
  Priority:  normal    |   Milestone:  6.4.0                    
 Component:  wxGUI     |     Version:  6.4.0 RCs                
Resolution:            |    Keywords:  d.vect.thematic          
  Platform:  Linux     |         Cpu:  Unspecified              
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Comment (by cmbarton):

 I looked at FloatCanvas quite a while ago. It is nice, but it is much
 simpler that we need for GRASS. The GRASS canvas does what FloatCanvas
 does, but a lot more.

 d.vect.thematic was written (by me and enhanced by others) as a shell
 script wrapper around d.vect. When it was written, all GRASS displays
 still used d.mon via an xterm. It still works in the display environment
 of TclTk and wxPython canvases, but not as well.

 We could add the newer module d.thematic.area to the layer tree
 selections. I've done that for GRASS 7. I don't know if that would be
 permitted for GRASS 6.4 as it is sort of a feature change (though it
 shouldn't break anything). We could also enhance d.vect.thematic by
 'Pythonizing' it. Glynn has done that for GRASS 7, but I haven't yet had
 the chance to test it.

 Ultimately, we are aware that we need to create a new and improved Python
 script or an extended C module. As of a few days ago, I think that the C
 module seems to be the direction we are headed. Any help would be
 appreciated.

 Michael

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/632#comment:6>
GRASS GIS <http://grass.osgeo.org>


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