I've been following the "Analysing Illumina bead-based data using beadarray" instructions. Right now, I am doing (roughly) this: library(beadarray) BLData = readIllumina(useImages=FALSE,annoPkg='Humanv3') BSData = createBeadSummaryData(BLData,imagesPerArray=1,method="illumina") However, the ids or row names in the BSData object appear to be the bead identifiers. What I need is data for the ILMN_nnnn ids. How do I do that mapping? BLData