# Blue - yellow library(arrayMagic) x <- matrix( rnorm(1000*100), nc=100 ) plot.imageMatrix( x ) # Red - green library(sma) plot.mat(x) Looking at the codes, the author utilise rgb(). Hope this helps. Regards, Adai. On Mon, 2004-07-19 at 20:27, F Duan wrote: > Dear All, > > > > There is a question I met when using Affy package in Bioconductor. I asked > it in BioC and didn't get any responses. Sorry to post again: > > > > Could anyone tell me how to draw a deep-blue Affymetrix image through > Image() function in Affy package? The default settings of image() draw me a > black-white image and if I modify it to 256 colors, I get a somehow > yellowish image. The reason for me to draw a deep-blue one is because I > found most of papers display the spotted cDNA microarray image as red-green > and the Affymetrix chip image as deep-blue. > > > > Thank you very much, > > > > Frank > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting- guide.html >