[R] Linear Models: Explanatory variables with uncertainties

[vito muggeo]

Probably you are looking for EIV (errors-in-variables) or ME 
(measurement errors) models.

"simex" is a possible package which needs to know the error variance..
Also RSiteSearch() may be helpful..

hope this helps,
vito


kpal ha scritto:
> One of the assumptions, on which the (General) Linear Modelling is
> based is that the response variable is measured with some
> uncertainties (or weighted), but the explanatory variables are fixed.
> Is it possible to extend the model by assigning the weights to the
> explanatory variables as well? Is there a package for doing such a
> model fit?
> 
> Thanks
> 
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-- 
====================================
Vito M.R. Muggeo
Dip.to Sc Statist e Matem `Vianelli'
Università di Palermo
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90128 Palermo - ITALY
tel: 091 6626240
fax: 091 485726/485612
http://dssm.unipa.it/vmuggeo