Grid with Simulated Variables

Data provided "as is," no warranties.


File Description

grid10x10.dbf:

Simulated random variables with spatial autocorrelation, base data set, to be joined with grid base map.

grid100.shp shx dbf:

Base map with 10 by 10 regular grid, no data.

grid100s.shp shx dbf:

Regular 10 by 10 grid with spatially autocorrelated data.

Type = polygon shape file, unprojected
Observations = 100
Variables = 34

Source
The grid was created in GeoDa. The variables were simulated using R and its spdep package.

Variable

Description

PolyID 

Grid cell identifier 

z

Random variables for standard normal distribution 

zmaxx

Standard normal variates transformed to follow a spatial moving average with parameter xx (xx is 02, 05, 07, 09 for 0.2, 0.5, 0.7, 0.9) 

ranzmaxx 

Randomly permuted observations matching the variable zmaxx 

zmanxx 

Standard normal variates transformed to follow a spatial moving average with negative parameter xx (same as above) 

ranzmanxx 

Randomly permuted counterpart of zmanxx 

zarxx 

Standard normal variates transformed to follow a spatial autoregressive process with parameter xx (same as above) 

ranzarxx 

Randomly permuted counterpart of zarxx 

zarnxx 

Standard normal variates transformed to follow a spatial autoregressive process with negative parameter xx (same as above) 

ranzarnxx 

Randomly permuted counterpart of zarnxx 



Prepared by Luc Anselin.

Last updated June 3, 2004