Questions about spautolm

Dear all,

I have a few questions about spautolm from the spdep package.

I get warning about "Assymetric weights" with family = "CAR". The
weights are defined like the code below. The dataset is roughly based on
a 1000 x 500m grid. But only the gridpoints in forest are measured.
Hence it is not possible to get symmetric weights. Is this violating an
assumuption of the model? Or can this cause another problem?

Buren <- dnearneigh(cbind(dataset$X, dataset$Y), d1 = 0, d2 = 6500)
Weights <- nb2listw(Buren, style = "W", zero.policy = TRUE)

My second question is about prediction. Is it possible to use a spautolm
model to make predictions for other locations?

Regards,

Thierry

------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium 
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be 
www.inbo.be 

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