[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:  7.1.0
 Component:  Raster       |    Version:  svn-trunk
Resolution:               |   Keywords:  compression, r.compress, null
       CPU:  Unspecified  |   Platform:  All
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Comment (by glynn):

 Replying to [comment:15 neteler]:
 > back to this topic: Here on our system I found > 1.7TB of NULL files in
 a single location, all
 > uncompressed.

 How large are the null files compared to the cell/fcell files?

 > What about having a "null2" file which is compressed and with index. If
 present, fine, otherwise use the uncompressed well known null file format?

 That's probably not a great deal of work, but as with any such change, we
 need to consider the migration strategy. If we just start creating
 compressed null files, mapsets will cease to be usable with older
 versions.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2349#comment:16>
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