Dear all, I have the following structure of a matrix > str(mdat) num [1:32268, 1:10] 0 0 0 0 0 0 0 0 0 0 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : NULL How can I destroy the attributes such that it simply gives: > str(mdat) num [1:32268, 1:10] 0 0 0 0 0 0 0 0 0 0 ... - Gundala Viswanath Jakarta - Indonesia