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Re: st: using postfile in a loop

From   Maarten buis <>
Subject   Re: st: using postfile in a loop
Date   Mon, 9 Nov 2009 22:14:43 +0000 (GMT)

--- On Mon, 9/11/09, Kushan Thakkar wrote:
> I have a dataset the contains the following data:
> cusip ticker date prc ....(few more variables).... RminusI
> I need to isolate data points for which RminusI is less
> than its first decile and then post these data points in a
> different file. 

This is not a case for -postfile- or a loop. In the example
below nlsw88.dta is your master data, grade is your id variable,
and wage is your RminusI variable.

*---------- begin example --------------
sysuse nlsw88, clear
bys grade: egen lb = pctile(wage), p(10)
keep if wage < lb
*------------ end example --------------
( For more on how to use examples I sent to statalist see: )

Hope this helps,
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen


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