Dear all,
I am interested in plotting maps visualizing spatial statistics in an
aggregated fashion, according to administrative boundaries.
More specifically, I have fitted a cross-section model on data regarding
Italian "counties" (province, for Italian readers) and I would like to
visualize residual behavior on a map, in order to have a first
assessment of their spatial autocorrelation. I would also make some EDA
on the spatial patterns (if any) of the regressors.
I have found the maps package (and related) and would be able to do what
I want, e.g., for the USA, essentially by
>map("state",fill=T,col=color)
where color is dependent on the statistic of interest, but I still lack
a data file for counties' boundaries in Italy. Does anybody know where
to find one? Is there any convenient tool for converting from other
formats? I would like to do everything in R if possible.
Thanks in advance
Giovanni Millo
R&D Dept.
Assicurazioni Generali SpA
Trieste, Italy
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