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st: Sppack vs spatgsa


From   <LUCIANO.LAVECCHIA@bancaditalia.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Sppack vs spatgsa
Date   Mon, 11 Jun 2012 09:24:50 +0200

Dear all,
I have recently discovered the sppack command by Drukker et al. (2012)
about spatial econometrics. I have used sppack to create a weighting
matrix (it doesn't matter what type - the problem presents with
contiguity, inverse distance, normalized, banded or not...), say W, and
I wanted to use W with the Pisati's spatgsa  to compute Moran's I for my
dataset.
 
Unfortunately, once I run "spatgsa varname , weights(W) moran"
 
I receive the following error message
 
Matrix W does not exist.
 
I suppose spatgsa doesn't recognize matrix created with sppack. Is there
anyway to create a weighting matrix with sppack and to perform Moran's I
(but also Geary's C and so on)? 
 
 
Grazie!
 
Luciano

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