'Tim.colors' in 'fields' package goes from blue to red, and passes through the colors cyan, yellow, and orange. Also known as Jet color-map in Matlab. You can also easily design your own color map using 'rgb' function from 'gdDevices'.
Jarek ====================================================\======= Jarek Tuszynski, PhD. o / \ Science Applications International Corporation <\__,| (703) 676-4192 "> \ [EMAIL PROTECTED] ` \ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of array chip Sent: Wednesday, August 03, 2005 8:03 PM To: [email protected] Subject: [R] color palette 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 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
