[GRASS-dev] [GRASS GIS] #2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed

[GRASS GIS]

#2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc speed
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  Reporter:  sprice       |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  new
  Priority:  normal       |  Milestone:  7.1.0
 Component:  Raster       |    Version:  svn-trunk
Resolution:               |   Keywords:  ZLIB LZ4 ZSTD
       CPU:  OSX/Intel    |   Platform:  MacOSX
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Comment (by wenzeslaus):

 Replying to [comment:26 mmetz]:
 > The patches compressors.patch and compressors.patch are also updated to
 properly support NULL compression. Data for the null2 file are now
 compressed with the same method like actual raster values.

 Tested with `GRASS_COMPRESSOR=LZ4`, `GRASS_COMPRESSOR=BZIP2` using the
 [comment:27 command above] but as I mentioned here or in #2349, the test
 do not cover NULL files well.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2750#comment:28>
GRASS GIS <https://grass.osgeo.org>