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

[Thomas Lumley]

On Tue, 2 Nov 2004, Scott Waichler wrote:

> A recent article in the earth science literature cited below and available at
> http://geography.uoregon.edu/datagraphics/EOS/
> 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
> http://geography.uoregon.edu/datagraphics/color_scales.htm.
> I have translated their RGB definitions into the hex color names given below.

I'll add these to the dichromat package if they don't go in anywhere else.

Also note that the ColorBrewer colors scheme at www.colorbrewer.org have 
comments on which ones work for color-deficient viewers and also for 
other problem settings (eg cheap inkjet printers, digital projects, B&W 
photocopies).  These color schemes, though not the metadata, are in the 
RColorBrewer package.

 	-thomas