search for: heatpmap

...: >heatmap.2(a_matrix, Rowv=NA, Colv =NA, col=greenred(60), scale="column", margins=c(7,10), trace="none", density.info=c("none")) Does someone know what I have to do in order to get my heatmap.2.png ??? Do I need some other package (I only use gplots, to allow the heatpmap.2) THANKS for your help Fred [[alternative HTML version deleted]]

Hello, I am trying to make a heatmap in R and am having some trouble. I am very new to the world of R, but have been told that what I am trying to do should be possible. I want to make a heat map that looks like a gene expression heatmap (see http://en.wikipedia.org/wiki/Heat_map). I have 43 samples and 900 genes (yes I know this will be a huge map). I also have copy numbers associated with