[R-sig-Geo] Help for spdep package

[Saman Monfared]

Dear all.
I try to fit CAR and SAR model.
I have fitted these model by spatulm but I don't understand the mean
of lambda???
I couldn't find good renascences to distinct the difference between SAR and CAR.
What is the difference between BYM and CAR model??
Hw can I predict results of spatulm for new data??
Thanks.

-- 
Saman Monfared
Msc, Department of Statistics, Shiraz University,
Shiraz 71454, Iran
Email: Samanmonfared1 at gmail.com

Tel: +98 917 5305167