Dear Sean, Thank you very much for your fast reply. Yes, I am using a t-test and I supposed that I should do exactly that you advised. Problem is that I do not know how I could implement it in R : to filter genes according the sign of their t-statistics and adjusted p-value. Thank you very much. [[alternative HTML version deleted]]

I just use the R functions "sort" and "rank". Or I export everything to a spreadsheet, since my clients are not familiar with R. --Naomi At 06:37 PM 5/20/2004 +0700, Vitalina Komashko wrote: >Dear Sean, >Thank you very much for your fast reply. Yes, I am using a t-test and I >supposed that I should do exactly that you advised. Problem is that I do not >know how I could implement it in R : to filter genes according the sign of >their t-statistics and adjusted p-value. > >Thank you very much. > [[alternative HTML version deleted]] > >_______________________________________________ >Bioconductor mailing list >Bioconductor@stat.math.ethz.ch >https://www.stat.math.ethz.ch/mailman/listinfo/bioconductor Naomi S. Altman 814-865-3791 (voice) Associate Professor Bioinformatics Consulting Center Dept. of Statistics 814-863-7114 (fax) Penn State University 814-865-1348 (Statistics) University Park, PA 16802-2111