Message-ID: <50F9B764.9010600@sapo.pt>
Date: 2013-01-18T20:58:12Z
From: Rui Barradas
Subject: Working with regular expression
In-Reply-To: <CA+dpOJmdDJ_e+yyRx9_aKH5PAE_ZvFXRETNaY69ga1E5TfAjWQ@mail.gmail.com>
Hello,
This one seems to work.
gsub("[[:alpha:]_]*(.*)", "\\1", Text)
Hope this helps,
Rui Barradas
Em 18-01-2013 20:11, Christofer Bogaso escreveu:
> Hello again,
>
> I was trying to extract the date element from a character vector using
> Regular expression. Below is a sample what I was trying to do:
>
>> Text <- c("asdf May 09 2009", "dsaf_01-01-2001")
>> gsub("[a-zA-Z_]", "", Text)
> [1] " 09 2009" "01-01-2001"
>
>
> I basically have a long text and the task is to extract the date
> element. My above strategy failed because I can not extract the month
> for the first element.
>
> Can somebody help me out?
>
> Thanks and regards,
>
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