On 2011-04-25 10:58, ivan wrote:
Dear Community,I have a matrix with assigned colnames and rolnames as follows: A B NR 0.15 0,05 AL 0,05 0,05 . . . . . . . . . I want to extract the names of the rows for which A>0,1 and B<0,1. In the above example this would be observation NR only. Hence the output should write for instance: names: NR Is this possible? Thank you very much for your help.
Call the matrix m. Then rownames(m[ m[, "A"] > 0.1 & m[, "B"] < 0.1, , drop=FALSE ]) should do what you want. Peter Ehlers ______________________________________________ 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.
