mapvariable: Plot Levels of a Variable in a Colour-Coded Map

In SpatialEpi: Methods and Data for Spatial Epidemiology

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)")

SpatialEpi documentation built on March 7, 2023, 8 p.m.