Thanks!
R.
----- Original Message -----
From: "Ulrich Kohler" <[email protected]>
To: <[email protected]>
Sent: Tuesday, September 26, 2006 10:45 AM
Subject: Re: st: Re: Logit with constraints and no constant
Rodrigo A. Alfaro wrote:
> Also, I could not add constraint to -mlogit-. The following
> is the result using auto dataset:
>
> sysuse auto
> (1978 Automobile Data)
>
> constraint define 1 _cons = 0
>
> mlogit foreign mpg weight, const(1)
There is a constant in each equation. You need to tell Stata, which of the
constants you want to constrain. Here are just two examples:
constraint 1 [1]_cons = 0
mlogit rep78 mpg, const(1)
constraint 2 [Foreign]_cons = 0
mlogit for mpg, const(2)
(the second example gives the error message -redundant or inconsistent
constraints-, but that was not the question here.)
-help constraint- provides other examples.
Uli
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