Am 21.12.2015 um 23:04 schrieb sirzerp:
> I am looking for color map that maps the deepest red at 0 value of my density
> file and then works to green at .5 value and then works to deepest blue at the 1
> value of my density file.

Make sure to use assumed_gamma 1.0 in the global settings; that'll give
you good colour transitions without drops in the brightness for the
in-between colours.

You'll probably want to start at rgb <R,0,0> for the red, then rgb
<Y,Y,0> if you want to go via yellow, then rgb <0,G,0>, and finally rgb
<0,0,B> for blue. I'd start with R=Y=G=B=1.0, and tweak from there.

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