[GRASS-dev] [GRASS GIS] #3043: Change default color table

GRASS GIS trac at osgeo.org
Mon May 23 23:31:46 PDT 2016

#3043: Change default color table
  Reporter:  wenzeslaus   |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  new
  Priority:  blocker      |  Milestone:  7.2.0
 Component:  Raster       |    Version:  svn-trunk
Resolution:               |   Keywords:  r.colors, d.rast, rainbow
       CPU:  Unspecified  |   Platform:  Unspecified

Comment (by mlennert):

 Replying to [ticket:3043 wenzeslaus]:
 > The default color table in 7.0 is `rainbow`. It is known that it is not
 ideal. I think we should change it before the next release.
 > For example, matplotlib [http://matplotlib.org/style_changes.html
 changed] the default to
 [http://matplotlib.org/examples/color/colormaps_reference.html viridis].
 But there are other options as well.

 Choice of color table is one of the most important parts of cartography. I
 always tell my students to never use the default colors of any software.
 And that even though I don't know why rainbow was chosen, I like it
 because it is so blatantly bad that it forces the user to make a
 deliberate choice of another color table ;-).

 So, I'm not sure I see the need to change that.

 If we do change, I think that my favorite candidate for default would then
 be grey. This avoids color blindness issues, works for most applications
 and at the same time, in our modern color-oriented computing world, does
 provoke users to chose another one.

Ticket URL: <https://trac.osgeo.org/grass/ticket/3043#comment:1>
GRASS GIS <https://grass.osgeo.org>

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