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st: "dyadic" data


From   Anne-Célia Disdier <Anne-Celia.Disdier@univ-paris1.fr>
To   statalist@hsphsun2.harvard.edu
Subject   st: "dyadic" data
Date   Wed, 9 Feb 2005 14:06:30 +0100

Dear all,
I`ve the following "dyadic" dataset (where var1 and var2 are string variables):

var1   var2
a      b
b      a
a      c
c      a
b      c
c      b

In my case, ab and ba, ac and ca, bc and cb are the same observations. I just
want to keep one of the two observations (for example ab, bc, ac). How can ask
Stata to delete the second observation (ba, cb, ca)

Many thanks for your answer!
Anne


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