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st: tsset on subsample of observations


From   "Robert Duval" <rduval@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: tsset on subsample of observations
Date   Sat, 11 Nov 2006 15:21:17 -0500

Dear All,

Is there a way to tsset a subsample of my observations?

I want to perform operations that involve time series commands, but if
I consider my entire dataset I have repeated time values within the
panel.

I would like to Stata to tsset my observations for that subset of obs.
that are uniquely identified within each panel... something like:

tsset x y if unique==1

Is there a way to do this?

Otherwise I would be forced to drop the repeated observations, but
since I need those obs. for other exercises this will force me to save
datasets: one with duplicates and another one without them. Something
that seems highly inefficient.

Any help would be greatly appreciated.
robert
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