On 2/14/2008 7:59 AM, Martin Waller wrote: > Hi, > > I guess this might be a FAQ or something, and there's probably a nice > simple way to do it, but I can't think of it: > > Given a matrix, I want to remove columns that are _entirely_ filled with > NAs (partial NAs are fine). > > How please?
mymat[,which(colMeans(is.na(mymat)) < 1)] > Thanks, > > Martin > > ______________________________________________ > 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. -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.
