[R-sig-Geo] Creating listw object from n by n matrix

[Roger Bivand]

On Sun, 1 May 2011, Sebastian Brandt wrote:

> Dear List,
>
> I have n datsets that I would like to test for spatial dependence using 
> the lm.LMtests function. I have computed a n by n row-standardised 
> spatial weights matrix that I have imported into R workspace from a 
> csv.-file.
>
> Running the lm.LMtests function I get an error message that the n by n 
> matrix is not a listw object. How can I convert the matrix into a listw 
> object?

?mat2listw

All of this is described in detail in ASDAR.

Roger

>
> I would be grateful for any help.
>
> Sebastian
>
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no