columbus {spdep}R Documentation

Columbus OH spatial analysis data set

Description

The columbus data frame has 49 rows and 22 columns. Unit of analysis: 49 neighbourhoods in Columbus, OH, 1980 data. In addition the data set includes a polylist object polys with the boundaries of the neighbourhoods, a matrix of polygon centroids coords, and col.gal.nb, the neighbours list from an original GAL-format file. The matrix bbs is DEPRECATED, but retained for other packages using this data set.

Usage

data(columbus)

Format

This data frame contains the following columns:

AREA
computed by ArcView
PERIMETER
computed by ArcView
COLUMBUS_
internal polygon ID (ignore)
COLUMBUS_I
another internal polygon ID (ignore)
POLYID
yet another polygon ID
NEIG
neighborhood id value (1-49); conforms to id value used in Spatial Econometrics book.
HOVAL
housing value (in $1,000)
INC
household income (in $1,000)
CRIME
residential burglaries and vehicle thefts per thousand households in the neighborhood
OPEN
open space in neighborhood
PLUMB
percentage housing units without plumbing
DISCBD
distance to CBD
X
x coordinate (in arbitrary digitizing units, not polygon coordinates)
Y
y coordinate (in arbitrary digitizing units, not polygon coordinates)
NSA
north-south dummy (North=1)
NSB
north-south dummy (North=1)
EW
east-west dummy (East=1)
CP
core-periphery dummy (Core=1)
THOUS
constant=1,000
NEIGNO
NEIG+1,000, alternative neighborhood id value

Details

The row names of columbus and the region.id attribute of polys are set to columbus$NEIGNO.

Note

All source data files prepared by Luc Anselin, Spatial Analysis Laboratory, Department of Agricultural and Consumer Economics, University of Illinois, Urbana-Champaign, http://sal.agecon.uiuc.edu/datasets/columbus.zip.

Source

Anselin, Luc. 1988. Spatial econometrics: methods and models. Dordrecht: Kluwer Academic, Table 12.1 p. 189.

Examples

columbus <- readShapePoly(system.file("etc/shapes/columbus.shp",
 package="spdep")[1])
col.gal.nb <- read.gal(system.file("etc/weights/columbus.gal",
 package="spdep")[1])

[Package spdep version 0.4-34 Index]