Rolf Turner wrote: > > On 19/01/2009, at 10:44 AM, Gabor Grothendieck wrote: > >> Well, that's why it was only provided when you insisted. This is >> not what regexp's are good at. >> >> On Sun, Jan 18, 2009 at 4:35 PM, Rau, Roland <r...@demogr.mpg.de> wrote: >>> Thanks! (I have to admit, though, that I expected something simple) > > It may not be what regexp's are good at, but the grep command in > unix/linux > does what is required *very* simply via the ``-v'' flag. I conjecture > that > it would not be difficult to add an argument with similar impact to the > grep() function in R.
something like grep(..., inverse=TRUE), perhaps. vQ ______________________________________________ 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.
