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...ster's defense. I'm using AIC to select models and my question is how do I know that the models I developed a priori contain the 'best' models in the system. How do I not know that some models which I didn't include aren't actually the 'best' model?? Thanks so much Lynnette ~ Lynnette Dagenais M.Sc. candidate Department of Renewable Resources University of Alberta, Edmonton Canada Looking for a X-Mas gift? Everybody needs a Flickr Pro Account. http://www.flickr.com/gift/ [[alternative HTML version deleted]]

...nd(EAST,NORTH) coords<-as.matrix(coords) nb1000<-dnearneigh(coords,0,1000,longlat=TRUE) then when I try to run the nb2listw(nb1000, style="W") I get an error message of "Empty neighbour sets found". Can someone tell me what this means and how to possible fix it. Thanks Lynnette ~ Lynnette Dagenais M.Sc. Candidate Department of Renewable Resources University of Alberta Edmonton, AB