[GRASS-dev] [GRASS GIS] #3667: Add an option to add grey color scale to r.in.gdal imports

[GRASS GIS]

#3667: Add an option to add grey color scale to r.in.gdal imports
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 Reporter:  pierreroudier  |      Owner:  grass-dev@…
     Type:  enhancement    |     Status:  new
 Priority:  normal         |  Milestone:
Component:  Default        |    Version:  unspecified
 Keywords:                 |        CPU:  Unspecified
 Platform:  Unspecified    |
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 At the moment `r.in.gdal` automatically affects the `viridis` colour
 palette to any raster layer imported.

 I think that's a good thing, and for single layer rasters it corresponds
 to best modern practice.

 It is however slightly annoying when importing imagery, and necessitate to
 loop through the bands with `r.colors layer.i col=grey`.

 I think the best of both worlds could be achieved by adding a flag `-g` to
 `r.in.gdal` that would force the colour palette to be `grey`.

 Thus:


 {{{
 r.in.gdal ./path/to/foo.tif out=foo
 }}}

 would use `viridis`, while:

 {{{
 r.in.gdal -g ./path/to/bar.tif out=bar
 }}}
 would use `grey`.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3667>
GRASS GIS <https://grass.osgeo.org>