Hello, All, I am recently beginning to touch Bioconductor and have a lot of naďve questions. Here are two of them which I failed to find out answers from the archive searching. First, 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. Second, could anyone give me a hint how to draw several images in the same frame (not only in the same window)? I know par(mfrow=c(x,y)) can help me draw several images in the same window, but now I want to go a little bit further to draw my images in one frame, i.e., there is no blank space between images. Thank you very much, Duan [[alternative HTML version deleted]]