Re: st: Inequality constraints in single and multi-equation models

["Michael Blasnik" <michael.blasnik@verizon.net>]

Actually, this advice is incorrect.  Stata only allows equality constraints. 
A quick look at -help constraint- or a google of "Stata inequality 
constraints" would have led either poster to that answer.

Michael Blasnik
michael.blasnik@verizon.net

----- Original Message ----- 
From: "Rose Medeiros" <rosem@cisunix.unh.edu>
To: <statalist@hsphsun2.harvard.edu>
Sent: Saturday, December 24, 2005 8:57 AM
Subject: Re: st: Inequality constraints in single and multi-equation models



> Michael.
> In general, Stata does not accept  the form "0 < lnpl < 1" I believe you 
> are getting the error message "0 not found" because Stata does not expect 
> a numeric value in that position.  Instead you probably want something of 
> the form:
> define constraint 7  lnpl < 0 &  lnpl < 1
> or
> define constraint 7  lnpl < 0
> define constraint 8  lnpl < 1
> HTH,
> Rose
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