Hello, I'm using affy version 1.3.27, and he vsn normalization method is not recognized when calling expresso(batch, normalize.method="vsn", ...). Do I need affy 1.4 for this? kind regards, Arne -- Arne Muller, Ph.D. Aventis Pharma, Drug Safety Evaluation 13 quai Jules Guesde 94403 Vitry-sur-Seine CEDEX, FRANCE phone: +33-(0)1589-32896 fax : +33-(0)1589-38197 email: arne.muller@aventis.com

You need to add the vsn method to normalize.AffyBatch.methods. See the help for normalize.AffyBatch.vsn. HTH, 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 >>> <arne.muller@aventis.com> 01/21/04 10:50AM >>> Hello, I'm using affy version 1.3.27, and he vsn normalization method is not recognized when calling expresso(batch, normalize.method="vsn", ...). Do I need affy 1.4 for this? kind regards, Arne -- Arne Muller, Ph.D. Aventis Pharma, Drug Safety Evaluation 13 quai Jules Guesde 94403 Vitry-sur-Seine CEDEX, FRANCE phone: +33-(0)1589-32896 fax : +33-(0)1589-38197 email: arne.muller@aventis.com _______________________________________________ Bioconductor mailing list Bioconductor@stat.math.ethz.ch https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor