Dear list, I am having trouble using the function betr (BioC package betr).. I am providing the required arguments (cond, timepoint, replicate) in the correct length and class, as well as a data matrix (exprs). However I get the following error Error: is.atomic(x) is not TRUE This occurs even though is.atomic(exprs) = TRUE I also get the following warnings... > warnings() Warning messages: 1: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 2: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 3: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 4: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 5: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 6: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 7: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 8: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 9: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 10: In mean.default(newX[, i], ...) : argument is not numeric or logical: returning NA 11: In mean.default(newX[, i], ...) :