It would be helpful if you included a sample of the data so that we could understand what you would like to do with it (before/after pictures).
?aggregate On Tue, Jul 22, 2008 at 9:57 PM, Kaposi-Novak, Pal <[EMAIL PROTECTED]> wrote: > Hi, > > Could somebody tell me how I can average expression values of replicate probe > sets in an data frame? > > Thanks > > Pal Kaposi-Novak MD PhD > PIRT Fellow > University of Pittsburgh > Department of Pathology > BST S408, 200 Lothrop Str > Pittsburgh, PA , 15261 > Tel: (412) 383-7748 > [EMAIL PROTECTED] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.