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RE: st: Re: format


From   Jan S <jan.schoeps@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Re: format
Date   Sun, 29 Jul 2012 15:41:31 +0000

You may use the -encode- command: encode x, egen(y). This will yield a unique ID, however in a different format. The IDs, if I recall correctly, start at 1 and go up counting. 

----------------------------------------
> From: jcoveney@bigplanet.com
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Re: format
> Date: Sun, 29 Jul 2012 21:08:28 +0900
>
> Chiara Mussida wrote:
>
> i have a string variable of 18 lenght. This is my id and i need it
> numerical. I proceeded with destring and i got a numerical variable in
> double format. I tried to get it in the format %18.0f, but i realised
> that stata does not maintain the original number. It approx each
> variable and in this way i cannot get a unique id Per individual. Do
> you know whether it is a problem of wrong format?
>
> --------------------------------------------------------------------------------
>
> It is not a problem of the wrong format. At the command line type:
>
> help data_types
>
> and examine the precision of Stata's numerical data types.
>
> I'm curious as to why you believe that you must store eighteen-character IDs as
> numbers. If you need to obtain a numerical ID for use of one of Stata's -xt-
> commands, then you can use -encode-.
>
> Joseph Coveney
>
>
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