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Hi Nayeem, Nayeem Quayum wrote: > Hello everybody, > I was trying to load HGU133 data set in to bioconductor for some > analysis. But I got an error. Any kind of help would be appreciated. The > code is very simple > > library(affy) > Data <- ReadAffy() > > I invoked R from the directory where all the CEL files are resided. But I am > getting the following error. > > Error in initialize(value, ...) : Cel file /home/dev/Desktop/temp/INF > alpha/Exo_A_U133B.CEL does not seem to be of HG-U133A type It would appear from the error message that you have a mixture of 133A and 133B chips in your working directory. Since these are different chips you cannot work with them simultaneously, hence the error. Best, Jim > Thanks. > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor -- James W. MacDonald University of Michigan Affymetrix and cDNA Microarray Core 1500 E Medical Center Drive Ann Arbor MI 48109 734-647-5623 ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues.