[R] color scale mapped to B/W

From: Michael Friendly <friendly_at_yorku.ca>
Date: Fri, 06 Jun 2008 16:37:28 -0400

In an R graphic, I'm using

cond.col <- c("green", "yellow", "red")
to represent a quantitative variable, where green means 'OK', yellow represents 'warning'
and red represents 'danger'. Using these particular color names, in B/W, red is darkest
and yellow is lightest. I'd like to find color designations to replace yellow and green so
that when printed in B/W, the yellowish color appears darker than the greenish one.

Is there some tool/code I can use to find these? i.e., something to display a grid
of color swatches with color codes/names I can look at in color and B/W to decide?

t hanks,

Michael Friendly     Email: friendly AT yorku DOT ca 
Professor, Psychology Dept.
York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street    http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT  M3J 1P3 CANADA

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Received on Fri 06 Jun 2008 - 21:17:43 GMT

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