Re: st: Extracting Numbers from Strings

[Richard Goldstein <richgold@ix.netcom.com>]

I don't think that this is quite what was requested (the number after 
the hyphen)

if the number wanted is always the last number, then you can slightly 
amend Bob's suggestion to get the last character (replace the first "1" 
in Bob's command with "-1")

If there can be more than one character after the hyphen and you only 
want the first, then you can do it in two steps -- use the "strpos" 
function to locate the hyphen and then grab the next character after than

if there can be more than one character after the hyphen and you want 
all of them, the first step remains to locate the hyphen -- then grab 
all characters after that hyphen with the substr function

Rich

Robert A Yaffee wrote:
> Jason,
>   gen y = substr(x,1,1)
>   destring y, replace
>     should do it.
>          Robert
>
> Robert A. Yaffee, Ph.D.
> Research Professor
> Silver School of Social Work
> New York University
>
> Biosketch: http://homepages.nyu.edu/~ray1/Biosketch2008.pdf
>
> CV:  http://homepages.nyu.edu/~ray1/vita.pdf
>
> ----- Original Message -----
> From: jasonm@ucla.edu
> Date: Wednesday, December 24, 2008 2:27 pm
> Subject: st: Extracting Numbers from Strings
> To: "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
>
> > I'm trying to extract the first number after a hyphen.
> > For example, from x="1234-1" I want to create y=1.
> > Thanks.
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