> x <- -1:4 > x<0 # returns TRUE (1) or FALSE (0) [1] TRUE FALSE FALSE FALSE FALSE FALSE > x+as.numeric(x<0) [1] 0 0 1 2 3 4
______________________________________________ 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.