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Re: Finding numbers in a string
From: |
John W. Eaton |
Subject: |
Re: Finding numbers in a string |
Date: |
Wed, 20 Apr 2005 18:00:21 -0400 |
On 20-Apr-2005, E. Joshua Rigler <address@hidden> wrote:
| On Wed, 2005-04-20 at 14:20, Søren Hauberg wrote:
| > Hi
| > I have a string containing both numbers and letters, and I want to
| > exctract the numbers and discard the letters. How do I do such a thing?
| >
| > /Søren
|
|
| There's probably a better way, but try this at the command line in
| Octave ('ismember' is an octave-forge function):
|
|
| Octave:1>
['ab1234567890cd'](find(ismember(toascii('ab1234567890cd'),[48:57])) )
|
|
| ([48:57]) are the ascii integers that correspond to the strings
| ['0':'9'], in case you were wondering)
How about something like
octave:1> x = "abc123def456"
x = abc123def456
octave:2> x(isdigit (x))
ans = 123456
jwe
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