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st: spatwmat "matrix not symmetric"
From
Richard Palmer-Jones <[email protected]>
To
[email protected]
Subject
st: spatwmat "matrix not symmetric"
Date
Fri, 19 Feb 2010 13:45:57 +0000
Dear readers
I get an error from spatwmat which I cannot explain.
The file is square (455 rows & columns), and has values 0/1 in each row
des using d:\gis\india\w1991_457_.dta
Contains data
obs: 455 19 Feb 2010 13:24
vars: 455
size: 829,920
-------------------------------------------------------------------------------
....
. use d:\gis\india\w1991_457_.dta, clear
. egen tot = rsum(r*)
. tab tot
tot | Freq. Percent Cum.
------------+-----------------------------------
1 | 7 1.54 1.54
2 | 22 4.84 6.37
3 | 48 10.55 16.92
4 | 90 19.78 36.70
5 | 96 21.10 57.80
6 | 95 20.88 78.68
7 | 68 14.95 93.63
8 | 22 4.84 98.46
9 | 5 1.10 99.56
10 | 2 0.44 100.00
------------+-----------------------------------
Total | 455 100.00
Total | 591 100.00
Yet when I run spatwmat I get an error.
. spatwmat using "d:\gis\india\w1991_457_.dta", name(w1991_contig)
standardize eigenval(E1)
matrix not symmetric
I am using ver 1.0 of spatwmat
c:\ado\plus\s\spatwmat.ado
*! Version 1.0 - 29 January 2001 STB-60 sg162
*! -spatwmat- Generates different kinds of spatial weights
matrices
*! Author: Maurizio
Pisati
*! Department of Sociology and Social
Research
*! University of Milano Bicocca
(Italy)
*! [email protected]
*!
.
Thanks for your help
Richard
*
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