corspatial

Hi. I have a dataset of unique coordinates (no missing coordinates). When I did the following:

lonlat<-mydata[, c("lon, "lat")]
sp1<-corSpatial(1,form=~lon+lat,type="g")
scor<-Initialize(sp1, lonlat , nugget=FALSE)

I got a value for sp1 (2.67). But got an error message for scor--Error in getCovariate.corSpatial(object, data = data) :
  Cannot have zero distances in "corSpatial"

I find that puzzling since I have unique coordinates and there should not be any zero distances. Any idea?

Thanks!

K.

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