[GRASS-dev] [GRASS GIS] #2349: CELL raster format: make ZLIB level 3 standard compression instead of RLE

[GRASS GIS]

#2349: CELL raster format: make ZLIB level 3 standard compression instead of RLE
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 Reporter:  neteler      |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  blocker      |   Milestone:  7.0.0                    
Component:  Raster       |     Version:  svn-releasebranch70      
 Keywords:  compression  |    Platform:  All                      
      Cpu:  Unspecified  |  
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Comment(by neteler):

 Replying to [comment:5 glynn]:
 >  * The compression level can be set via GRASS_ZLIB_LEVEL, whose value
 should be an integer between 0 and 9. If not set (or if the value cannot
 be parsed as an integer), zlib's default compression level will be used
 (lib/gis/flate.c:333, if a different default is preferred).

 In relbranch7 there is currently:

 Z_DEFAULT_COMPRESSION = 1 - "gives the best compromise between speed and
 compression" as per r61424.

 Perhaps zlib compression 1 should be adopted for trunk?

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2349#comment:10>
GRASS GIS <http://grass.osgeo.org>