Hello everybody, I am trying to normalize some ChIP-chip data using rMAT and to do so, you have to feed your .bpmap to the program (the file contains information relating to the design of the Affymetrix tiling arrays). Unfortunately, I get an error saying I am working with doubles instead of the wanted integer. I have not changed the .bpmap file at all and I can make no sense of it because have nothing to open it properly. I guess it might be due to the customized array we are using. The sizes might be different? Thanks for the help, Patrick bpmapA<-"PRNFGMm2b520462F_rev.bpmap" > celA<-c("WT1.CEL","WT2.CEL", "Input_1.CEL", "Input_2.CEL") > ERA<-BPMAPCelParser(bpmapA, celA, seqName="chr2") Reading Sequence Information from ./PRNFGMm2b520462F_rev.bpmap Erreur dans .ReadBPMAPSeq(BPMAPFileName, seqToRead, readPM = TRUE, readMM = FALSE, : INTEGER() can only be applied to a 'integer', not a 'double' De plus : Messages d'avis : 1: In max(range) : aucun argument pour max ; -Inf est renvoy? 2: In min(range) : aucun argument trouv? pour min ; Inf est renvoy? sessionInfo() R version 2.11.0 (2010-04-22) i386-apple-darwin9.8.0 locale: [1] fr_CH.UTF-8/fr_CH.UTF-8/C/C/fr_CH.UTF-8/fr_CH.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] rMAT_2.4.0 affxparser_1.20.0 Biobase_2.8.0 IRanges_1.6.0 loaded via a namespace (and not attached): [1] tools_2.11.0