> exp<-ReadAffy() AffyBatch object size of arrays=534x534 features (4458 kb) cdf=RG_U34A (8799 affyids) number of samples=2 number of genes=8799 annotation=rgu34a notes= Warning message: the condition has length > 1 and only the first element will be used in: if (dim(intensity(cel)) != dim.intensity) stop(paste("CEL file dimension mismatch !\n(file", > eset <- expresso(exp, normalize.method="qspline", bgcorrect.method="rma", pmcorrect.method="pmonly", summary.method="liwong") background correction: rma normalization: qspline PM/MM correction : pmonly expression values: liwong background correcting...done. normalizing...[1] "samples= 100 k= 5 first= 0" Error in rep(data, t1) : invalid number of copies in "rep" In addition: There were 50 or more warnings (use warnings() to see the first 50) I'd appreciate any suggestions, thank you! Knud [[alternate HTML version deleted]]