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Re: st: Deleting Only Particular Observations


From   Christian Weiß <christian.weiss@ebs.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Deleting Only Particular Observations
Date   Wed, 1 Jul 2009 22:49:40 +0200

Works great, thanks a lot!




On Wed, Jul 1, 2009 at 10:43 PM, Maarten buis<maartenbuis@yahoo.co.uk> wrote:
>
> --- On Wed, 1/7/09, Christian Weiß wrote:
>> Variable size contains the marketcap of about 2000 firms
>> from 11 countries (grouping var country).
>>
>> I would like to keep only the 100 biggest firms (by
>> marketcap) from each country, and delete the residual
>> observations.
>
> gen negsize = -size
> bys country (negsize) : keep if _n < 101
> drop negsize
>
> Hope this helps,
> Maarten
>
> -----------------------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
>
>
>
>
>
>
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