[R] color scale mapped to B/W

[Greg Snow]

You may also want to look at the "show.colors" function in the "DAAG" package to get candidate colors.

________________________________________
From: r-help-bounces at r-project.org [r-help-bounces at r-project.org] On Behalf Of Michael Friendly [friendly at yorku.ca]
Sent: Friday, June 06, 2008 2:37 PM
To: R-Help
Subject: [R] color scale mapped to B/W

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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