--- On Tue, 3/11/09, Tunga Kantarci wrote:
> I wish to calculate a figure where I call coefficient
> estimates and residuals sum of squares and degrees of
> freedom. All these quantities are from the stata
> estimation output. When I run the relevant command
> -nlcom exp(_b[_cons]+_b[income]*15.3)*exp(e(rss)/e(df_r)/2)-
>I get the error "could not calculate numerical derivative".
> This is perhaps because e(rss) and e(df_r) are not estimates.
No, this is because these numbers are going to HUGE, so huge
that in many cases a computer can't contain that number. This
to me suggest a conceptual error rather than a Stata error:
why do you want to do this?
-- Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
