Dear BioCs, I'd like to receive some suggestions, because I don't know how how to do it: My experiment consists of 5 time points (4 slides/time) of WT X test sample in a two-color microarray platform. I'd like to cluster the genes over time a heatmap kind of graphic (genes x time). How do I start? Which library is the best for my objective, considering that I have RG and topTable lists created by limma package? Sincerely, Priscila [[alternative HTML version deleted]]