[R] intercept value in lme

[Andrew Robinson]

Dear Victor,

this is a really difficult problem to intepret, let alone diagnose.
Please provide commented, minimal, self-contained, reproducible code
that will allow us to see what the problem is.

Cheers

Andrew

On Wed, Dec 06, 2006 at 09:33:31AM +0100, victor wrote:
> Dear all,
> 
> I've got a problem in fitting multilevel model in lme. I don't know to 
> much about that but suspect that something is wrong with my model.
> 
> I'm trying to fit:
> 
> m1<-lme(X~Y,~1|group,data=data,na.action=na.exclude,method="ML")
> m2<-lme(X~Y+Z,~1|group,data=data,na.action=na.exclude,method="ML")
> 
> where:
> X - dependent var. measured on a scale ranging from -25 to 0
> Y - level 1 variable
> Z - level 1 variable
> 
> In m1 the intercept value is equal -3, in m2 (that is after adding Lev 2 
> var.) is equal +16.
> 
> What can be wrong with my variables? Is this possible that intercept 
> value exceeds scale?
> 
> Best regards,
> 
> victor
> 
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> and provide commented, minimal, self-contained, reproducible code.

-- 
Andrew Robinson  
Department of Mathematics and Statistics            Tel: +61-3-8344-9763
University of Melbourne, VIC 3010 Australia         Fax: +61-3-8344-4599
http://www.ms.unimelb.edu.au/~andrewpr
http://blogs.mbs.edu/fishing-in-the-bay/