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


From   "Brian P. Poi" <bpoi@stata.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Does the update to -quaids- require Stata 13?
Date   Fri, 18 Oct 2013 14:33:03 -0500



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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