mapvariable {SpatialEpi}R Documentation

Plot Levels of a Variable in a Colour-Coded Map

Description

Plot levels of a variable in a colour-coded map along with a legend.

Usage

mapvariable(y, spatial.polygon, ncut=1000, nlevels=10, lower=NULL, upper=NULL, main=NULL, xlab=NULL, ylab=NULL)

Arguments

y variable to plot
spatial.polygon an object of class SpatialPolygons (See SpatialPolygons-class)
ncut number of cuts in colour levels to plot
nlevels number of levels to include in legend
lower lower bound of levels
upper upper bound of levels
main an overall title for the plot
xlab a title for the x axis
ylab a title for the y axis

Value

A map colour-coded to indicate the different levels of y

Author(s)

Jon Wakefield, Nicky Best, Sebastien Haneuse, and Albert Y. Kim

References

Bivand, R. S., Pebesma E. J., and Gomez-Rubio V. (2008) Applied Spatial Data Analysis with R. Springer Series in Statistics.

E. J. Pebesma and R. S. Bivand. (2005) Classes and methods for spatial data in R. R News, 5, 9–13.

Examples

data(scotland)
map <- scotland$spatial.polygon
y <- scotland$data$cases
E <- scotland$data$expected
SMR <- y/E
mapvariable(SMR,map,main="Scotland",xlab="Eastings (km)",ylab="Northings (km)")

[Package SpatialEpi version 0.1 Index]