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 $1,000)
- CRIME
- residential burglaries and vehicle thefts per thousand
households in the neighborhood
- OPEN
- open space in neighborhood
- PLUMB
- percentage housing units without plumbin
- DISCBD
- distance to CBD
- X
- x coordinate (in arbitrary digitizing units, not polygon coordinates)
- Y
- y coordinate (in arbitrary digitizing units, not polygon coordinates)
- AREA
- neighborhood area (computed by SpaceStat)
- NSA
- north-south dummy (North=1)
- NSB
- north-south dummy (North=1)
- EW
- east-west dummy (East=1)
- CP
- core-periphery dummy (Core=1)
- THOUS
- constant=1,000
- NEIGNO
- NEIG+1,000, alternative neighborhood id value
- PERIM
- polygon perimeter (computed by SpaceStat)
Details
The row names of columbus
and the region.id
attribute of
polys
are set to columbus$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
data(columbus)
summary(columbus)
[Package
spdep version 0.3-12
Index]