Often, data are computed in real (not integer) numbers, and in such cases, comparison to zero is not as good as using a tolerance level. Modifying slightly the suggestions of others, I would use something like this:
my.tol <- 1e-50 x <- c(1.4, 2.97, 1.0e-100, pi, 0.2, 5.1, 6.8, 0.0) print(x) is.na(x) <- abs(x) < my.tol print(x) -- Mike Prager, NOAA, Beaufort, NC * Opinions expressed are personal and not represented otherwise. * Any use of tradenames does not constitute a NOAA endorsement. ______________________________________________ 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.
