--- On Fri, 15/5/09, Andrew Criswell wrote:
> This seems like a straight forward example. But I don't
> understand why it fails. I am using version 10.1
>
> input str6 gender str8 party wgt
> gender party wgt
> male democrat 55
> male repub 65
> female democrat 50
> female repub 30
> end
>
> . ipf [fweight = wgt], fit(gender + party)
In Stata strings are hardly ever used in computations. It is much
more common to represent the categories with numbers, and attach
appropriate value labels or use conventions like 1 is true and 0
is false (so a value 0 on a variable female means "not a female"
ergo "male"). Anyhow, without strings the version of -ipf- I
have works:
*------- begin example ------------
drop _all
input female repub wgt
0 0 55
0 1 65
1 0 50
1 1 30
end
ipf [fweight = wgt], fit(female + repub)
*------------- end exampele ---------------
Notice that it is important to report where you got user written
software from, as often there are multiple versions floating
around in cyber space. My version of -ipf- came from the Stata
Journal, vol. 2, nr. 1.
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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