Hello, I have a gene expression data set build up form rows of genes expression as fellow: GeneID GeneName Sample1 .......... Samplen Category +1 ...........-1 1 gene1 0.5 ..............0.67 2 gene2 0.34 ............. 0.78 How I could use bioconductor to analyze this data set and get the most informative genes, classification.. Clustering and etc Malik [[alternative HTML version deleted]]