<>
-trace-ing the thing shows that -ipf- does not catch the wrong type of
variable in your -varlist- at the first possible moment, i.e. in its
-syntax- statement, presumably because -syntax- was not capable of doing
that at the time the command was last edited, i.e. in 2000.
Stata finally chokes on a -drop- statement that asks it to compare the
string variable to the numeric missing value ".", which leads to the "type
mismatch" error. Hard to diagnose without the benefit of -trace-...
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Andrew Criswell
Gesendet: Freitag, 15. Mai 2009 16:46
An: [email protected]
Betreff: st: IPF troubles
Hello All,
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)
Deleting all matrices......
Expansion of the various marginal models
----------------------------------------
marginal model 1 varlist : gender
marginal model 2 varlist : party
type mismatch
r(109);
end of do-file
r(109);
.
--
Andrew Criswell, Ph.D.
Graduate School
Bangkok University
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