Thomas Cornelissen <[email protected]> asks about using the programmers utility
-_diparm-:
> I want to use -_diparm- in the context of an estimation using -ml-.
> Having defined a program 'myll' that calculates my maximum likelihood
> values, my do-file reads:
>
> ml model lf myll (b: y_observ = x) /logse;
> _diparm /logse, exp prob;
> ml maximize;
>
> However -_diparm- is answered with an error message, saying 'equation
> [/logse] not found'.
> I tried to specify -logse:_cons- instead of -/logse- but it was the same.
>
> I wonder whether it is possible to use -_diparm- in a do-file as I did,
> because it is a programmer's command.
> Can anybody give me a hint about the right syntax and about where to place
> the command?
-_diparm- may only be called after the model is fit, and the slash "/" is not
allowed. Here is a successful permutation of the above example:
. ml model lf myll (b: y_observ = x) /logse
. ml maximize
. _diparm logse, exp prob
--Jeff
[email protected]
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