Re: st: RE: Unknown function () error.

["Vimalanand S. Prabhu" <prabhu@unc.edu>]

Dear Nick,

If I use *, then I am getting the results for the poisson model and not 
nbreg. I had actually got the model working but somehow did not save my 
results. I though that I had used # operator then, but I am not sure.

Thanks,

Prabhu



Nick Cox wrote:

> I see # characters in the code. I may be missing
> something but I believe that they are both meaningless
> and illegal in this context. 
> You presumably want some other operator. 
> Nick 
> n.j.cox@durham.ac.uk 
> Vimalanand S. Prabhu
>
>
> > I am new to ml command. I am getting an error: Unknown	
> > function (), when 
> > I run the following code for negative binomial count model. 
> > Is there any 
> > obvious error in the code which I seem to miss out.
> >
> > The L function is -exp(lambda.ui).(lambda.ui)^yi/(yi)!
> >
> > program define nbreg2
> > args lnf theta uu
> > quietly replace `lnf' = -exp(`theta')#`uu' + 
> > $ML_y1#(`theta'+ln(`uu')) - 
> > lnfact($ML_y1)
> > end
> > ml model lf nbreg2 (jdemh=price eff) ()
> > ml check
> > ml maximize
>
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/