[GRASS-dev] [GRASS GIS] #2009: thumbnails.py failure

GRASS GIS trac at osgeo.org
Tue Jun 18 17:10:16 PDT 2013

#2009: thumbnails.py failure
 Reporter:  neteler             |       Owner:  grass-dev@…              
     Type:  defect              |      Status:  new                      
 Priority:  normal              |   Milestone:  7.0.0                    
Component:  Compiling           |     Version:  svn-trunk                
 Keywords:  r.colors, v.colors  |    Platform:  All                      
      Cpu:  Unspecified         |  
Changes (by hamish):

  * keywords:  r.colors v.colors => r.colors, v.colors


 Anna - the new r.colors module GUI dropdown list looks brilliant. thanks!
 The information is right where/when you need it.

 Thumbnails in the help page fixed in trunk with r56787.

 some observations of further buglettes:

 I note in trunk there is some rendering error in the top-left corners of
 all the image boxes, manifested as a missing pixel. (in GRASS 6 there
 was/is a similar bug in d.barscale + Xdriver)

 Another rendering issue to be fixed: the absolute-value limited/libgis
 color tables (grey.eq, grey.log, and random) are too big by a few pixels
 on the right and bottom sides.

 We should do something better with the population palettes, maybe put them
 on a log-scale. Maybe the same with the precipitation palette. See the
 special rule for population in the old shell script version of the
 thumbnail generation script:

 Finally, this is a clear case where the Xdriver does a better job than the
 Cairo driver, compare the thumbnails in trunk with the crispness of the
 devbr6 versions:
 ... sometimes you want 1px lines to be exactly 1px wide, and no anti-


Ticket URL: <https://trac.osgeo.org/grass/ticket/2009#comment:4>
GRASS GIS <http://grass.osgeo.org>

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