[R-sig-Geo] Help to interpret optimal bandwidth in ggwr.sel (spgwr package)

[Manuel Ribeiro]

Dear list, i am using spgwr as an exploratory tool in the analysis of
environment-health associations.

The study area is square, with dimensions 100x100 m.

 

In one of the results of my analysis, i found an optimal bandwidth
(optimizing the CV score) of 507 m.

And I interpret this bandwidth as a buffer distance where CV is the
smallest.

However, maximum (Euclidean) distance between any 2 points in the grid
(100x100) is 141,42 m, so I would expect an optimal bandwidth varying
between zero and 141 m. I am missing something in the interpretation of this
result, since the optimal bandwidth is 507 m.

If anyone can help me interpreting this correctly I will be deeply
appreciated

Kind regards

Manuel

 

Manuel C Ribeiro

Cerena - Centro de Recursos Naturais e Ambiente
Instituto Superior Técnico
Av. Rovisco Pais  1049-001 Lisboa Portugal
Tel:  (+351) 21 841 74 41
Fax: (+351) 21 841 73 89

 


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