Asking for Mopt_maxmin() mlib

[Mike Stark]

Dear stata users,

Im trying to run the code for fitting models, but I stuck at this error. When I set the trace on, I found that the error is mopt_maxim() blank as shown in the image. Could you help me to solve this issue? Thank you very much for your time.

[Joseph Luchman]

Hi Mike,

I get the following when I ask for that function with -mata which-

. mata mata which Mopt_maxmin
  Mopt_maxmin():  lmataopt

I don't believe that Mata functions that are not defined by the user (i.e., ones that are loaded automatically from .mlib, .mata, or .ado files) are visible using -mata: mata describe- but can still be found with -mata: mata which-.

For this function, StataCorp documents it in the following:

view moptimize_stata.mata, adopath asis

And you can look through it to see if you can find a hint to what's wrong (though it looks like it's a missing argument issue to -merlin_logl_bernoulli- which is presumably called later within the top function).

- joe