Hello dear List, when I save a cpm table (ordered by p-value for example) , I do not have the names of the genes but only cpms. How can I add them ? I used : > o <- order(lrt$table$PValue) > tab <- cpm(y) > write.table(tab, file="CPM.txt") thank you, anna -- output of sessionInfo(): R version 2.15.1 (2012-06-22) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252 [3] LC_MONETARY=French_France.1252 LC_NUMERIC=C [5] LC_TIME=French_France.1252 attached base packages: [1] splines stats graphics grDevices utils datasets methods [8] base other attached packages: [1] edgeR_3.0.0 limma_3.14.1 -- Sent via the guest posting facility at bioconductor.org.