#170: r.colors: make nice random colors like r.watershed
--------------------------+-------------------------------------------------
Reporter: hamish | Owner: [email protected]
Type: enhancement | Status: new
Priority: minor | Milestone: 6.4.0
Component: default | Version: svn-develbranch6
Resolution: | Keywords: r.colors
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Comment (by hamish):
re. the fairly dark r.watershed color rule:
raster/r.watershed/ram/close_maps2.c
{{{
if((blue*.11 + red*.30 + green*.59) < 100) {
G_set_color(r, rd, gr, bl, &colors);
}}}
Matlab (or Octave) calc:
{{{
>> rgb = [ 27 36 70 ]
>> mult = [.11 .30 .59]
>> sum(rgb .* mult)
ans =
55.0700
}}}
55.07 < 100 ???
Hamish
--
Ticket URL: <http://trac.osgeo.org/grass/ticket/170#comment:4>
GRASS GIS <http://grass.osgeo.org>
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