gregexpr(pattern="[^0-9]","+12345ty") [[1]] [1] 1 7 8 attr(,"match.length") [1] 1 1 1 attr(,"useBytes") [1] TRUE gregexpr(pattern="[^\\d]","+12345ty") [[1]] [1] 1 2 3 4 5 6 7 8 attr(,"match.length") [1] 1 1 1 1 1 1 1 1 attr(,"useBytes") [1] TRUE
why the pattern `[^\\d]` has no same effect as of `[^0-9]` ? ______________________________________________ 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.