Thank you Ken for the reply.
I realized yesterday that
. test foreign=0
was not valid syntax after -manova-. Although I though
I should get an "invalid syntax" not a crash.
I specified:
. test foreign=0
because I used it and it work with -mvreg- in Stata 7.
Should it work the same way?
Best,
Ricardo.
--- [email protected] wrote:
> Ricardo Ovaldia <[email protected]> reports:
>
> > The following piece of code causes my Stata 8 to
> crash
> > running on Windox XP:
> >
> > . manova headroom trunk turn = price foreign,
> cont(price)
> > . test foreign=0
> >
> > It happens everytime. Can anyone confirm this?
>
> And several people confirmed it on various
> platforms.
>
> Next executable update we will stop it from dumping
> core.
>
> However, let me point out that
>
> . test foreign=0
>
> is not valid syntax after -manova-. -help test-
> points you to
> -help manovatest- which says that
>
> test [exp = exp] ...
>
> where exp must have references to coefficients
> enclosed in
> [eqno]_coef[] (or synonym [eqno]_b[]). eqno is
> either ## or
> name. Omitting [eqno] is equivalent to
> specifying [#1]
>
> Similar information is in the manuals.
>
> Maybe the test you meant to perform was
>
> . test _b[foreign[1]] = 0
>
> or
>
> . test [headroom]_b[foreign[1]] = 0
>
> or
>
> . test [trunk]_b[foreign[1]] = 0
>
> or
>
> ...
>
> Why foreign[1]? Use the -detail- option of -manova-
> to see the
> underlying mapping of categorical variables. You
> can do this
> after the fact with
>
> . manova , detail
>
> At the top of the output you will see a table
> showing the
> mapping. In this case, the levels of foreign are
> refered to as 1
> and 2 (the underlying values being 0 and 1).
>
>
> Ken Higbee [email protected]
> StataCorp 1-800-STATAPC
>
> *
> * For searches and help try:
> *
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=====
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
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