Hi folks,

I need suggestions on this simple question.  I have built a logistic
regression model for predicting presence/absence for some kind of
species in a large area. The model does not incorporate any spatial
effect or longtitude or latitude. From this model I can get confidence
intervals for pridictions at all pixels in that area. My concern is,
can we measure the change of confidence against the distance to
observed points? Generally, the closer new observations to existed
ones (which are used to build the model), the higher confidence we
have for the pridictions because of intrinsic spatial autocorrelation.
Does variogram do this kind of job? Or any other references? Thank you
very much.
-- 
I am Tib, not Rob.

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