If the whole dataset has exactly
this structure this is indeed the
direct solution.
Nick
[email protected]
Scott Merryman
> Here is one way:
>
> keep if mod(_n,2) == 1
Anne-C�lia Disdier
> > 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)
> >
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