Re: st: Stata 9 and prchange

[Richard Williams <Richard.A.Williams.5@ND.edu>]

At 08:18 PM 6/5/2005 -0400, Eric Uslaner wrote:
> Stata 9 is giving some weird behavior with an add-on.
>
> First, after an ordered probit (simple oprobit model), I tried to use
> Scott Long's prchange.  Here's what I got:
>
> prchange
> [_cut1] not found
> r(111);
1.  I can replicate the problem.

2.  As Jeph Herrin suggests, doing something like

version 8: oprobit y x1 x2

will get around the problem.

3.  As to why it occurs - I think it is because the e(b) matrix is 
formatted differently in version 8 and version 9.  In version 8, there are 
no equation names, but in version 9 there are (just do -mat list e(b)- 
under both version 8 and version 9 and you will see what I mean).

In general - if a user-written post-estimation command doesn't work right 
in Stata 9, you may need to do something like version 8: when running the 
estimation command.


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Richard Williams, Notre Dame Dept of Sociology
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