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Re: st: how drop a block of cases based other variable values


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how drop a block of cases based other variable values
Date   Fri, 9 Dec 2011 14:53:21 +0100

On Fri, Dec 9, 2011 at 2:45 PM, Daniel Marcelino wrote:
> can anyone point me how can I drop all observations belonging to
> "r" based on "winner" value? I meant, I don't wish to drop only
> observations where winner values is 1, but
> given I got a winner in "r==a" I want drop all observations of this group.

*------------ begin example --------------
clear
input str2 r byte(w v1 v2 winner)
 "a" .5 1 2  .
 "a" .1 2 3  .
 "a" .9 3 2  1
 "a" .9 3 4  1
 "a" .2 4 5  .
 "a" .3 5 1  .
 "b" .4 1 2  .
 "b" .1 2 3  .
 "b" .7 3 4  .
 "b" .8 4 1  .
 "b" .8 4 5  .
 "b" .9 5 1  .
end

bys r : egen byte todrop = total(winner)
drop if todrop
drop todrop
*------------- end example --------------------

hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------
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