Hi all, Sorry to bother you again, but after I typed in the requisite line to bring vsn into affy, I still got an error. Thanks again for all your help, Ed > normalize.AffyBatch.methods <- c(normalize.AffyBatch.methods, "vsn") > eset <- expresso(Data, bg.correct = FALSE, normalize.method = "vsn", pmcorrect.method = "pmonly", summary.method = "medianpolish") normalization: vsn PM/MM correction : pmonly expression values: medianpolish normalizing...Error in do.call(method, alist(object, ...)) : couldn't find function "normalize.AffyBatch.vsn"

Did you remember to load the vsn package first? Jim James W. MacDonald Affymetrix and cDNA Microarray Core University of Michigan Cancer Center 1500 E. Medical Center Drive 7410 CCGC Ann Arbor MI 48109 734-647-5623 >>> Edmund Chang <echang4@life.uiuc.edu> 06/03/04 4:32 PM >>> Hi all, Sorry to bother you again, but after I typed in the requisite line to bring vsn into affy, I still got an error. Thanks again for all your help, Ed > normalize.AffyBatch.methods <- c(normalize.AffyBatch.methods, "vsn") > eset <- expresso(Data, bg.correct = FALSE, normalize.method = "vsn", pmcorrect.method = "pmonly", summary.method = "medianpolish") normalization: vsn PM/MM correction : pmonly expression values: medianpolish normalizing...Error in do.call(method, alist(object, ...)) : couldn't find function "normalize.AffyBatch.vsn" _______________________________________________ Bioconductor mailing list Bioconductor@stat.math.ethz.ch https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor