this should do what you want:
> myexstrings = c("*AAA.AA","BBB BB","*.CCC.","**dd- d")
> a = gsub("^\\W*","", myexstrings,perl=T)
> b = gsub("\\W.*", "", a, perl=T)
> b
[1] "AAA" "BBB" "CCC" "dd"
first one, removes any non-word characters from the beginning (as you
already figured out)
second one, removes any remaining non-word characters AND everything
following.
on 06/27/2008 06:23 AM Tom.O said the following:
Hi R gurus
I have a matching problem that I cant solve. I have tried multiple solutions
and searched varius help-sites but I cant get it to work.
This is the problem
myexstrings = c("*AAA.AA","BBB BB","*.CCC.","**dd- d")
what I want do do is to remove any non-characters in the beginning and
everything else after the non-character symbol after the first set of
characters so that the string becomes:
c("AAA","BBB","CCC","dd")
I can figure out the start, sub("^\\W*","", myexstrings,perl=T) will remove
the unwanted beginnings but then its the rest.
And please no links to any helppages, I have been looking at most of them
for the last hour without any success.
Thanks
Regards
Tom
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