[R-sig-Geo] auto-correlation of nominal variables

[Roger Bivand]

On Sun, 16 Jun 2019, Emanuele Barca wrote:

> Dear friends,
>
> I received a  dataset of point data, organized in the following way:
>
> a couple of coordinates and a column of "crop classes codes", three columns.
>
> I would like to compute something similar to the Moran index for each crop 
> class code.
>
> How can I carry out such task in R?

spdep::joincount.multi() and spdep::joincount.test().

and read the references on the help pages. See eg.

https://keen-swartz-3146c4.netlify.com/area-data-and-spatial-autcorrelation.html#measures-of-spatial-autocorrelation

Roger

>
> thanks in advance
>
> emanuele
>
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-- 
Roger Bivand
Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; e-mail: Roger.Bivand using nhh.no
https://orcid.org/0000-0003-2392-6140
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