Kee-Lee Lee
>
> With your help, I reran my IVPROB procedure with
> ignoring all observations with any missing values on
> A2-A7. The same error message occurred: "matrix has
> missing values".
>
> So, I guess that it is not about the missing values on
> my variables. Can anyone suggest what might be the
> problems and how to resolve those problems?
> (Has anyone encountered the same error message in any
> of STATA procedures: what are some general
> causes/remedies with the error message matrix has
> missing values?)
There are several reasons why you might get this message.
One class is that you are trying to put something
which is missing directly into a matrix.
Another class is that you are asking Stata to
do a matrix calculation which would result
in one or more elements of the result matrix
being missing.
A general suggestion is now to
set trace on
and then reissue -ivprob-, and to report where the program
emits this message.
Nick
[email protected]
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