--- "FUKUGAWA, N." <[email protected]> wrote:
> I want to generate a new variable (var2) representing a maximum
> value within the same year.
The easiest way is to use -egen-, see the example below:
(I have replaced one the values of var1 with a missing value to show
what happens in that case)
*--------------- begin example ----------------
drop _all
input year var1
1997 14
1997 32
1998 18
1998 .
1998 50
1998 1
1999 3
1999 23
1999 37
end
bys year: egen var2 = max(var1)
list
*------------------- end example -------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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