Message-ID: <971536df0901162039h36e9780k81183447bbb77217@mail.gmail.com>
Date: 2009-01-17T04:39:25Z
From: Gabor Grothendieck
Subject: splitting a string / finding a numeric value within a string
In-Reply-To: <FBFC9A31-1DAE-4D59-8438-4FEBAB8B1FB5@licht-malerei.de>
The first one replaces non-numerics with the empty string
and the second one returns numerics directly:
gsub("[^0-9]", "", "test_01.log")
# or
library(gsubfn)
strapply("test_01.log", "[0-9]+")[[1]]
On Fri, Jan 16, 2009 at 11:00 PM, J?rg Gro? <joerg at licht-malerei.de> wrote:
> Hi,
>
> I have this variable;
>
>
> x <- c("test_01.log")
>
>
> and I want to extract the number (01) out of the variable.
> So that I get;
>
> > x
> [1] 1
>
>
>
> I tried strsplit, but I don't know how to refer to the result.
>
> Can someone help me with that?
> [[alternative HTML version deleted]]
>
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