Dear List, I have a data matrix that consists of ~4500 rows and 25 columns (i.e. an exprSet object that I converted via the 'exprs' function into a data matrix)
Now I want to remove/delete the rows where all exp. values in that particular row are below or equal to a specific cut-off value (e.g 1.11) I have tried using several commands to address this issue: >Matrix[rowSums(Matrix <= 1.11) <= 1.11, ] or >Matrix[ !apply(Matrix<=1.11,1,all), ] The above commands seem to work fine when I generate a small "test" matrix like: >M <- matrix(c(2,5,8,0.4,0.8,0.5,4,12,3), nrow=3, byrow=T) However, non of the two commands decrease the number of rows in my real matrix! Any help would be appreciated Kind regards, Peter ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
