ACroske <Audy3272 <at> yahoo.com> writes: > > > I have a large matrix full of probabilities; I would like to convert each > probability to a 1 or a 0 using rbinom. > How can I do this on the entire matrix? The matrix was converted from a > raster ArcMap dataset, so the matrix is essentially a map. Because of this, > I have no column headings. > Thanks!
How about matrix(rbinom(length(m),prob=m,size=1),nrow=nrow(m)) or (perhaps marginally more efficiently?) y <- (runif(m)<m) storage.mode(y) <- "double" Ben Bolker ______________________________________________ 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.
