[R] color palette

From: array chip <arrayprofile_at_yahoo.com>
Date: Thu 04 Aug 2005 - 10:03:05 EST


Hi, I have a matrix with both positive and negative numbers, I would like to use image() to draw a heatmap. How can I can design a palette (or is there a function already available) that treat negative numbers in a blue gradient and positive numbers in a red gradient and treat 0 as white?

Thanks



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Aug 04 10:07:05 2005

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