--- Julia Spies wrote:
> I have a panel data set with tradingpair as the ID and year as the time
> variable. For some of the tradingpairs I would now like to drop observations
> whenever year<1995. Hence, I would need a command like
>
> drop if tradingpair=countryX and year<1995
drop if tradingpair==countryX & year<1995
countryX is the value of traidingpair for country X
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z214
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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