[R] Wild card characters

[Dhiren DSouza]

Thank you both :)

-Dhiren

From: Gabor Grothendieck <ggrothendieck at gmail.com>
Reply-To: Gabor Grothendieck <ggrothendieck at gmail.com>
To: Uwe Ligges <ligges at statistik.uni-dortmund.de>
CC: Dhiren DSouza <dhiren22 at hotmail.com>, r-help at stat.math.ethz.ch
Subject: Re: [R] Wild card characters
Date: Sat, 30 Jul 2005 16:31:37 -0400

Another way to do it is:

sub("[.].*", ".41", x)

This says to replace the first dot and everything after by .41.  When . 
appears
in a character class, i.e. [.], then you don't need backslashes.  Also
you don't need backslashes in the second argument.


On 7/30/05, Uwe Ligges <ligges at statistik.uni-dortmund.de> wrote:
 > Dhiren DSouza wrote:
 >
 > > I have a string '982323.1' and would like to replace everything after 
the
 > > '.' with a '41'.  So the string should look like '982323.41'.  The code 
I
 > > use to do this is
 > >
 > > sub('\.$','41',982323.1)
 >
 > You have to escape "\", see ?regexp:
 >
 > sub('\\.[[:digit:]]*$','\\.41', "982323.1")
 >
 > Uwe Ligges
 >
 >
 >
 > > This works fine as long as there is only 1 digit after the decimal.  If 
I
 > > have '982323.10', then the result of the code is '982323.141' instead 
of
 > > '982323.41'
 > >
 > > How do I fix the code to replace all characters after the decimal by 
41?
 > >
 > > Thank you
 > >
 > > -D
 > >
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