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rowland
2007 Oct 26
1
Help needed on calculation of Moran's I
...s into
nb format.
I have used the dnearneigh() funtion now with an arbitrarily high upper
distance to make it include all plots. However, when I do the
lm.morantest() I get a Moran's I value which is the same as the expected
value and a P-value of 1.
I have used the following code:
>attach(lowland)
>coords <- as.matrix(cbind(long, $lat))
>coord.nb <- dnearneigh(coords, 0, 10000 longlat=TRUE)
>coord.list <- nb2listw(coord.nb, style="W")
>lianasp.lm <- lm(lianasprich ~ log(averdist) + dsl + lianadens +
wooddens)
>lm.morantest(lianasp.lm, coord.list, alterna...