[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:  critical     |   Milestone:  7.0.0                    
Component:  Raster       |     Version:  svn-releasebranch70      
 Keywords:               |    Platform:  All                      
      Cpu:  Unspecified  |  
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 At time, integer maps (CELL) are still compressed with RLE
 This leads to a huge waste of disk space when it comes to large
 data.

 Proposal: make ZLIB, level 3 the standard compression.

 At time we can enable the environment variable GRASS_INT_ZLIB
 but it will use the default ZLIB level 6 compression which
 is too CPU intensive. So a  (user) control over this is important.

 BTW: Manual of r.compress updated in r60814, needs to be backported.

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