[GRASS-dev] [GRASS GIS] #3156: Cannot export GRASS raster map using r.out.png (crashes on windows)

[GRASS GIS]

#3156: Cannot export GRASS raster map using r.out.png (crashes on windows)
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  Reporter:  spawley  |      Owner:  grass-dev@…
      Type:  defect   |     Status:  new
  Priority:  normal   |  Milestone:  7.0.7
 Component:  Raster   |    Version:  7.0.4
Resolution:           |   Keywords:  r.out.png, wingrass, g.ppmtopng
       CPU:  x86-64   |   Platform:  MSWindows 7
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Comment (by wenzeslaus):

 Replying to [comment:13 wenzeslaus]:
 > ...would require setting transparency; code for a simple but limited way
 to do that is attached too. I'm thinking about adding some of these
 functions to the Python library.

 Transparency function added to trunk (7.7) in a new module
 `grass.imaging.operations` in r73329 (together with crop, invert colors
 and create thumbnail).

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3156#comment:20>
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