Dear all,

I have started to use gwr in data of species counts in islands of the
western hemisphere, but  the gwr() output contains negative locals R2s,
especially when bandwith value are low. This happen also when I use the
optimal bandwidth choosed by gwr.sel() with CV. Does anybody knows what
could cause this problem?

Here the code that I used (all variables continuos):

>attach(islands)
>bnd=gwr.sel(RICHNESS~log(AREA)+DISTANCIA,data=islands,coords=cbind(islands$LONG,islands$LAT))
>gwr(RICHNESS~log(AREA)+DISTANCIA,data=islands,coords=cbind(islands$LONG,islands$LAT),bnd)


Thanks,
Jorge Menezes

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