Re: st: Does the update to -quaids- require Stata 13?

["Brian P. Poi" <bpoi@stata.com>]

On 10/18/2013 02:07 PM, Jorge Eduardo Pérez Pérez wrote:
> I am trying to use Brian Poi's -quaids-, version st0268_1 (the update
> on SJ 13(3)) on Stata 12.1, updated as of  09 Jul 2013, on a Windows
> XP machine.
>
> Trying to run a simple quaids model
>
> clear
> webuse food
> quaids w1-w4, anot(10) prices(p1-p4) expenditure(expfd)
>
> produces the following error:
>
> (_quaids__expshrs() in lquaids, compiled by Stata 13.0, is too new to
> be run by this version of
> Stata and so was ignored)
>                   <istmt>:  3499  _quaids__expshrs() not found
> nlsur__quaids returned 3499
> verify that nlsur__quaids is a function evaluator program
>
> I was able to run this in Stata 13 without issues.
>
> Maybe Mr. Poi compiled his mata functions in Stata 13 and they don't
> run on Stata 12. Can somebody replicate this? If this a bug, can
> compatibility with Stata 12 be restored? Could the documentation be
> updated to include the version of Stata required?

Jorge is absolutely correct that I compiled the code using Stata 13, though there is nothing in the code that requires features specific to Stata 13. The source code for the Mata functions used by -quaids- is distributed along with the ado files. Type

. which _quaids__mlib.mata

to find it.

Since there are quite a few functions in that file, many users might find recompiling the Mata library to be too challenging. Those users are welcome to contact me privately to get a Stata 12 version of the library file.

   -- Brian Poi
   -- bpoi@stata.com

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