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st: RE: Re: Keeping the Earliest Observations on Each Leg
Note that you could easily keep the ties with
a small twist on this.
bysort id lleg (date): keep if date == date[1]
as under the aegis of -by:- subscripts are
understood to be calculated within-group.
Nick
[email protected]
Michael Blasnik
> bysort id lleg (date): keep if _n==1
>
> note: any ties on date will be rboken arbitrarily
Raphael Fraser
> >I am interested in keeping the earliest observations on each leg
> > where left leg is denoted (lleg=1) and right leg (lleg=0).
> Can anyone
> > assist?
> >
> > id date lleg
> > 46 22aug1993 0
> > 46 28sep1993 1
> > 46 28sep1993 1
> <snip>>
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