[R] Color schemes that work for people with color-deficient vision

Duncan Murdoch murdoch at stats.uwo.ca
Wed Nov 3 02:23:29 CET 2004

On Tue, 02 Nov 2004 13:04:48 -0800, Scott Waichler
<scott.waichler at pnl.gov> wrote:

>A recent article in the earth science literature cited below and available at
>points out that rainbow color schemes and mixtures of green and yellow 
>can be troublesome for people with color-deficient vision.  
>The authors propose alternative schemes that can be viewed and downloaded
>in RGB, HSV, CMYK, and RGB256 formats from 
>I have translated their RGB definitions into the hex color names given below.

Thomas Lumley has just written a couple of functions that make
experimentation with scales like this a lot easier.  They're currently
in R-devel, and will appear in R 2.1.0 next spring.  If you want to
play with them before that, you can get the source and the docs from 




Duncan Murdoch

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