I'm running samr (Two class unpaired), but keep getting the following error: perm= 1 Error in if (logged2) { : argument is of length zero <code> library (impute) library (samr) data = list (x=dat, y=y, geneid = matrix(twoUnpaired.data[,1],ncol=1), genenames = matrix(twoUnpaired.data[,2], ncol=1)) samr.obj <- samr (data, resp.type="Two class unpaired", nperms=100) </code> Would someone please shed some light. Thank you. [[alternative HTML version deleted]]