Would someone please tell me if the exprs matrix object in the exprsSet object output from express() is log2? Thanks much, Dick ********************************************************************** ********* Richard P. Beyer, Ph.D. University of Washington Tel.:(206) 616 7378 Environmental Health, Box 354695 Fax: (206) 685 4696 4225 Roosevelt Way NE, # 100 Seattle, WA 98105-6099 ********************************************************************** *********

That would depend on the expression summary you use. In the case of the default (RMA) it would be in log base 2. Ben > Would someone please tell me if the exprs matrix object in the exprsSet object output from express() is log2? > > Thanks much, > Dick > ******************************************************************** *********** > Richard P. Beyer, Ph.D. University of Washington > Tel.:(206) 616 7378 Environmental Health, Box 354695 > Fax: (206) 685 4696 4225 Roosevelt Way NE, # 100 > Seattle, WA 98105-6099 > ******************************************************************** *********** > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > http://www.stat.math.ethz.ch/mailman/listinfo/bioconductor