[R] matrix to gal object

[Roger Bivand]

bernardo lagos alvarez <blacertain <at> gmail.com> writes:

> 
> useR's
> 
> I need transform the matrix
> 
> wdat
>      [,1] [,2] [,3] [,4] [,5] [,6]
> [1,]    0    1    0    1    1    0
> [2,]    1    0    0    1    1    0
> [3,]    0    0    0    0    1    1
> [4,]    1    1    0    0    1    0
> [5,]    1    1    1    1    0    0
> [6,]    0    0    1    0    0    0
> 
> to  gal object. How I do with spdep?

RSiteSearch("matrix listw")

gets you to several threads on the R-sig-geo list, suggesting in your case:

w <- mat2listw(wdat)
# convert matrix to spatial weights list
write.nb.gal(w$neighbours, "wdat.gal")
# write neighbours component of spatial weights list as GAL file

Roger Bivand



> 
> Thanks in advance for the help.
> 
> Bernardo.
> University  of Concepció.
> 
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