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Re: st: how to drop repeated observations?


From   Eva Poen <eva.poen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to drop repeated observations?
Date   Sat, 21 Feb 2009 22:07:29 +0000

Isabelle,

see -help duplicates-. -duplicates drop siren- should do the trick.

HTH,
Eva


2009/2/21  <Isabelle.Roux@ehess.fr>:
> Hello,
>
> I'm new in using Stata and I have a dataset with french
> firms'immatriculation numbers (this variable is called siren). I would
> like to drop observations when the same siren appears for the second, the
> third...time, but I don't achieve to do that.
> Thank you very much for your help.
>
> Yours sincerly,
>
> Isabelle Roux
>
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