st: RE: nl @ within ado

[Nick Cox <n.j.cox@durham.ac.uk>]

Conversely, why it is a problem that a separate file is needed? For example, packages based on -ml- are distributed as sets of files. 

Nick 
n.j.cox@durham.ac.uk 

Keith Dear

I am trying to build an ado file to fit a certain nonlinear model using
the function evaluator version of nl.
This requires defining a subsidiary program whose name must begin with
'nl'. So I wrote something like this:

======== mymodel.ado
prog mymodel
...
nl myfit @ y x, param(...) init(...)
...
end

prog nlmyfit
...
end
====================

This doesn't work because, being a subprogram of mymodel, the program
nlmyfit is actually named mymodel.nlmyfit, and so nl doesn't find it. If
I move the definition of nlmyfit to the calling do-file then the whole
thing works, but that defeats the purpose of writing an ado file at all.

Is there a way to define a program within an ado file but NOT have it
named as a subprogram?
(I tried putting nlmyfit in a separate file and running it from within
mymodel.ado, but Stata wasn't fooled.)
Or any other solution?

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