search for: heat_map

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 each gene/sample and need these to be represented as the colour intensities on the heat map. There are multiple genes per sample with different copy numbers. I think my trouble may be...