On Wed, 23 Jan 2008, Ajar wrote: > Hi, > > I have a question regarding the image function. Is there a way to > specify a separate color set for each column in the matrix?
Yes. But it will require some attention to the scaling of your matrix. This shows how it might be done: > mat <- matrix( runif(100), nc=10) > image( mat + rep( 1:2, each=50),col=c(topo.colors(10),heat.colors(10))) Add an offset to the matrix to choose a different color scheme. Of course, the step size for the offset needs to be greater than or equal to the range of values that you are representing. You will need to specify zlim to be sure this works right. HTH, Chuck > > TIA, > ajar. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > Charles C. Berry (858) 534-2098 Dept of Family/Preventive Medicine E mailto:[EMAIL PROTECTED] UC San Diego http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego 92093-0901 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
