Hi all, I am making a heatmap using gplots. I have two problems; a solution to any one will be greatly appreciated: 1. I have a file with genes and samples from two groups of patients. I don't want to cluster samples; just the genes. The samples should stay in the same order as in the datafile. Any way to do this? 2. Or, I can split the datafile into the two patient groups and make heatmaps and present two pictures, but the ranges of values are different. Therefore, I want to adjust the range on the color key to be the same in both heatmaps. That is, instead of being 0 to 800 and 0 to 1500, both should have 0 to 1500. Please help!! Many thanks, -Davendra Sohal, MD, MPH Research Fellow Albert Einstein College of Medicine, Bronx, NY, USA. [[alternative HTML version deleted]]