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Re: st: RE: constraint in regression and forval

From   Bruno Schoumaker <>
Subject   Re: st: RE: constraint in regression and forval
Date   Tue, 23 Mar 2010 08:38:13 +0100

Thank you so much ! It works :-)

Le 22/03/2010 19:03, Nick Cox a écrit :

constraint 1 dumy97 = `= xalea[`i']'



I want to run a series of 100 constrained regressions with different
constraints randomly selected from a normal distribution

I tried use the following program, but it looks like the constriant is
ignored. When I define the constraint to be equal to a number (eg.
constraint 1 dumy97=0.03), it works... but I want the constraint to
change automatically.

Has anyone an idea on how I could do this (use randomly selected
constraints for a large number of models) ?

Thank you in advance



generate xalea = rnormal()*0.0645+0.028

forvalues i = 1(1) 100 {
constraint 1 dumy97 = xalea[`i']
xi: poisson _d i.ageg rcsp1-rcsp4 v1-v4 dumy97, exposure(exposy)

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Bruno Schoumaker
Institut de démographie
Universite catholique de Louvain
1/17 Place Montesquieu
1348 Louvain-la-Neuve (Belgium)
Tel. 32 10 474136
bureau a191

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