Reduce() is much nicer, but I usually use rowSums(A) > 0 for 'or', and rowSums(A) == ncols for 'and'.
Which works slightly faster. I noticed, though, that Reduce() doesn't work on matrices. Is there an alternative for matrices, or do you have to convert the matrix first to a data.frame, and then use Reduce? -- View this message in context: http://r.789695.n4.nabble.com/Using-apply-for-logical-conditions-tp2310929p2310991.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
