Re: [R] wildcards and removing variables

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Tue 11 Oct 2005 - 01:00:03 EST

On 10/10/05, Marc Schwartz (via MN) <mschwartz@mn.rr.com> wrote:
> On Mon, 2005-10-10 at 10:37 -0400, Afshartous, David wrote:
> > All,
> >
> > Is there are a wildcard in R for varible names as in unix? For example,
> >
> > rm(results*)
> >
> > to remove all variable or function names that begin w/ "results"?
> >
> > cheers,
> > Dave
> > ps - please respond directly to afshar@miami.edu
>
>
> See ?ls, which has a 'pattern' argument, enabling the use of Regex to
> define the objects to be listed and subsequently removed using rm().
>
> You can then use something like:
>
> rm(list = ls(pattern = "\\bresults."))

Also, in R 2.2.0 (or look in sfsmisc package for older versions of R) you can use glob2rx to get shell-style wildcards (aka globbing):

ls(pattern = glob2rx("results*"))



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