st: About spatial weight matrices for spatial data analysis

[Roberto Ezcurra <roberto.ezcurra@unavarra.es>]

I would like to define a spatial weight matrix for spatial data analysis 
with STATA. I guess I have to use "spatwmat" comand, but I do not know how 
to generate the matrix.
For example, in the case of  three regions (R1, R2 and R3) I have the 
following matrix,

        R1      R2      R3
R1      d_11     d_12   d_13
R2      d_21    d_22    d_23
R3      d_31    d_32    d_33

where d_ij denotes the distance between region i and region j.

How can I define this matrix with "spatwmat"?

Thank you very much.










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Roberto Ezcurra Orayen
Departamento de Econom�a
Universidad P�blica de Navarra
Campus de Arrosadia s/n
31006 Pamplona - Navarra
Espa�a (Spain)
E-mail: roberto.ezcurra@unavarra.es
Tlno.: 34 948 169706
Fax: 34 948 169721
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