Dear All, I am a new user of bioconductor and have a question on RMA from the affy package. It seems that the expression values are log transformed. Is there a way not to tranform it? Thanks very much, Yang --------------------------- Yang Tang Department of Neurology University of Cincinnati Vontz Center Rm. 2327 Cincinnati, OH, 45267-0536 Phone: 513-558-7078, Fax: 513-558-7009 [[alternative HTML version deleted]]

use the anti-log. if log2(y) = x, then y=2^x. logged.expression <- exprs(rma(Data)) notlogged.expression <- 2^exprs(rma(Data)) On Tue, 18 Nov 2003, Yang Tang wrote: > Dear All, > > I am a new user of bioconductor and have a question on RMA from the affy > package. It seems that the expression values are log transformed. Is there a > way not to tranform it? > > Thanks very much, > > Yang > --------------------------- > Yang Tang > Department of Neurology > University of Cincinnati Vontz Center Rm. 2327 > Cincinnati, OH, 45267-0536 > Phone: 513-558-7078, Fax: 513-558-7009 > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor >