[R-sig-Geo] conditional autoregressive models

[Roger Bivand]

On Thu, 30 Oct 2003, giovanna jona lasinio wrote:

> Does anyone know how to estimate via ML a conditional autoregressive model
> (CAR as in Cressie 1993) using R?
> 

Not yet. As Brian Ripley pointed out in R News in 2001, where 
functionality has been available in S-PLUS SpatialStats, there has been 
less incentive to write R code. My guess would be that if one used 
errorsarlm() in spdep as a template (with the functions being optimised) 
then it wouldn't be too difficult to do - but returning an object of a 
"carlm" class, for example. Next print(), anova(), and summary() classes. 
Would anyone like to help?

Roger

> Thanks
> Giovanna Jona Lasinio
> DSPSA University of Rome "La Sapienza"
> 
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no