Dear all, at which step should I change my parameters to avoid this error message ? > detags <- rownames(y)[as.logical(de)] > plotSmear(lrt, de.tags=detags) Erreur dans quantile.default(M, c(0.05, 0.95)) : missing values and NaN's not allowed if 'na.rm' is FALSE thanks, 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.