Thanks Nick and Jean Marie -
-storecmd- is one of my favorites and I'll be looking forward to using the
new improved model.
Al Feiveson
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Cox
Sent: Wednesday, December 07, 2005 6:04 PM
To: [email protected]
Subject: RE: st: strange -storecmd- behavior
Interestingly, this fix to the version
control problem itself runs into a
version control problem. Under Stata 7, the option -missing- was not allowed
with -version-, so a further level of handling is required.
Also, I no longer have Stata 6
installed, but the original versions
should work with Stata 6.
I'll post revised files to Kit Baum
in due course.
Nick
[email protected]
Nick Cox
> Yes indeed. How stupid of me not to see that. Thanks very much.
Jean Marie Linhart, StataCorp LP
> > Al Feiveson asked:
> >
> > > Nick I was using -storecmd- to do -xtintreg- but I
> obtained slightly
> > > different results after the -storecmd- statement and then if I
> > > repeat the analysis with a straight command. For some reason, with
> > > "storecmd", the integration method used is "ghermite" (not the
> > > default), whereas with the straight command, it correctly uses the
> > > default "aghermite". But I never issued an option for
> "ghermite" so
> > > what's going on?
> >
> > Nick Cox replied:
> >
> > > I can't explain this, but I don't see that it's anything
> to do with
> > > -storecmd-. -storecmd- doesn't reach inside your command
> and change
> > > it. Nor can I think of side-effects that would cause this. Still,
> > > lack of imagination is not proof of absence.
> >
> > I can explain what is going on. -storecmd- sets -version
> 6.0- in its
> > code, so when it runs the -xtintreg- command, it is run as
> version 6.
> > Under version control, -xtintreg- properly reverts to the old method
> > of Gauss-Hermite quadrature which was used in versions prior to 9.
> >
> > When Al Feiveson runs his code from the command line, he is using
> > version 9, and he gets version 9 behavior.
> >
> > We (at StataCorp) run into this sort of issue with version control
> > frequently (crack the hood on -xtintreg- itself for
> > example...) if Nick
> > wants to change the behavior of -storecmd-, I'd suggest he
> change the
> > portion of his code that executes the command from:
> >
> > * execute command
> > `cmd'
> >
> > to:
> >
> > * execute command
> > local vv : di "version " string(_caller()) ", missing :"
> > `vv' `cmd'
> >
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