Re: st: "no observations"

[Richard Williams <Richard.A.Williams.5@ND.edu>]

At 10:30 PM 5/1/2006, Scott Cunningham wrote:
> Anyone know why I keep getting this error.  I ask because it's
> impossible that I have "no observations," since I just ran the
> poisson MLE procedure prior to executing -mfx-.  So I'm not sure
> what's going on here.
>
> .  xi:xtpoisson rp srfm age2 hgc hhd1 i.census i.year
> i.census*i.year, fe i(id)
>
> >  vce(boot);
> .  mfx, dydx varlist(srfm age age2 hgc hhd1);
> no observations
> r(2000);
Age isn't in the original xtpoisson command, so perhaps that is the problem.


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Richard Williams, Notre Dame Dept of Sociology
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