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Re: st: how to drop duplicate values


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to drop duplicate values
Date   Fri, 14 Sep 2012 15:04:51 +0200

On Fri, Sep 14, 2012 at 2:16 PM, Malin Lundberg Rasmussen wrote:
> Is it possible to make 'the keeping' random? So that it will not always be the left or right eye that is kept?

gen u = runiform()
bys id (u) : keep if _n == 1

So, u is a random number, you than sort within id on u, and you keep
the first eye but which eye is first is random.

-- Maarten

---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
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