Hi, I probably have a stupid question, but how do I specify that my data is in log in siggenes? I know in the window version of SAM, one can check if the data is in log scale or not, what about in siggenes? is log scale the default? Thanks

Ashley Lin wrote: > Hi, > > I probably have a stupid question, but how do I specify that my data is > in log in siggenes? I know in the window version of SAM, one can check > if the data is in log scale or not, what about in siggenes? is log scale > the default? You don't need to explicitly specify that your data are log transformed (although they should be). The reason for this checkbox in SAM is simply for the calculation of fold change, which is done on the normal scale, so SAM needs to know if the data need to be unlogged or not. Jim > > Thanks > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor -- James W. MacDonald University of Michigan Affymetrix and cDNA Microarray Core 1500 E Medical Center Drive Ann Arbor MI 48109 734-647-5623 ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues.