Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: how to drop duplicate values
From
Maarten Buis <[email protected]>
To
[email protected]
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
---------------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/