--- Henry Sauermann wrote:
> I have several categorical variables that I would need to expand using xi
>(putting the dummies in directly makes the command huge and very complex).
> My problem is that qvf does not seem to work with the expansion. While it
> does expand variables in the first part of the statement, it does not expand
> variables in the second.
>
> E.g., in
>
> xi: qvf y i.x1 x2 x3 x4 (i.x1 x2 x4 t3)
>
> ,the first time x1 is expanded, but the second time qvf reports missing
> variables (presumably indicating that it did not expand x1 correctly the
> second time).
You can use the fact that you feed these commands varlists and thus you
can use wildcards when specifying your variables, see: help varlist. In y
our case you could type:
xi i.x1
qvf y _Ix1* x2 x3 x4 (_Ix1* x2 x4 t3)
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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