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st: US spatial weight matrices


From   "Scott Merryman" <smerryman@kc.rr.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: US spatial weight matrices
Date   Tue, 8 Feb 2005 20:41:01 -0600

Thanks to Kit Baum, -usswm- US spatial weight matrices are available from
the SSC. 

The do-file includes examples of mapping the results of -spatlsa- for local
spatial autocorrelation.  This requires Maurizio Pisati's -tmap- (version
2.0, -ssc inst tmap-), the US county map (-ssc desc usmaps2-), and a slight
change to -spatlsa-.  On line 282 the matrix column name needs to be changed
from "p-value" to "pvalue."

To install:

ssc desc usswm
net get usswm


'USSWM': module to provide US state and county spatial weight (contiguity)
matrices

DESCRIPTION/AUTHOR(S)
      
This package contains two Stata data files that are US state and county
level (48 contiguous states) spatial weight matrices. These can be used with
Maurizio Pisati's STB-60 sg162 "Tools for spatial data analysis."  A do-file
illustrates their usage.
      
KW: spatial
KW: states
KW: counties
KW: GIS
KW: matrices


Scott



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