Hi, I am learning Bioconductor and would like to normalize affymetrix data using dCHIP and RMA. This is my code to point: # dCHIP normalization eset <- expresso(raw.data, normalize.method="invariantset", bg.correct=FALSE, pmcorrect.method="pmonly", summary.method="liwong") #Writing eset expression data to an excel file: write.exprs(eset, file="eset_export.xls") Is this correct? [[alternative HTML version deleted]]