HSAR (version 0.5.1)

Beijingdistricts: Boundaries of districts (SpatialPolygonsDataFrame) in Beijing

Description

The geographic boundaries of districts (SpatialPolygonsDataFrame) in Beijing. This is only a subset of districts in Beijing where our land parcel samples fall into.

Usage

data(Beijingdistricts)

See Also

landprice, landSPDF

Examples

# NOT RUN {
data(Beijingdistricts)

library(spdep)
plot(Beijingdistricts,border="light grey")
# extract the area of each district
library(rgeos)
library(classInt)
library(RColorBrewer)

Beijingdistricts$geo.area <- gArea(Beijingdistricts,byid=TRUE) / 1000000
x <- Beijingdistricts$geo.area
breaks <- classIntervals(x,4,"fisher")$brks
groups <- cut(x,breaks,include.lowest=TRUE,labels=FALSE)
palette <- brewer.pal(4, "Blues")
plot(Beijingdistricts,col=palette[groups],border="grey")

# extract the district level spatial weights matrix
nb.list <- spdep::poly2nb(Beijingdistricts,queen=FALSE)
mat.list <- spdep::nb2mat(nb.list,style="W")
M <- as(mat.list,"dgCMatrix")
# }