[R] trim function in R

Gabor Grothendieck ggrothendieck at gmail.com
Mon Jul 24 16:13:20 CEST 2006

A . (dot) matches any character and $ matches the end of string so
this replaces the last two characters with the empty string:

   sub("..$", "", x)

On 7/24/06, Wade Wall <wade.wall at gmail.com> wrote:
> Hi all,
> I am looking for a function in R to trim the last two characters of an
> 8 character string in a vector.  For example, I have the codes
> 37-079-2, 370079-3,37-079-8 and want to trim them to 37-079 by
> removing the last two characters.  Is sub the correct function to use,
> and if so how can I specify trimming the last 2 characters?  I have
> read the help file, but can't quite figure out how to do it.
> Thanks,
> Wade
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