DeducerSpatial (version 0.4)

choro_plot: lifted from choropleth in the USCensus2000 package

Description

lifted from choropleth in the USCensus2000 package

Usage

choro_plot(sp, dem,
    cuts = list("quantile", seq(0, 1, 0.25)), alpha = 0.5,
    main = NULL, sub = "", legend.loc = "bottomleft",
    legend.title = "", add = TRUE, ...)

Arguments

sp

a SpatialPolygonsDataFrame

dem

the variable to map to color

cuts

how to cut dem

alpha

transparency

main

title

sub

subtitle

legend.loc

legend location

legend.title

title

add

add to current plor

...

additional parameters for plot

Examples

library(UScensus2000)

lat <- c(43.834526782236814,30.334953881988564)
lon <- c(-131.0888671875  ,-107.8857421875)
southwest <- openmap(c(lat[1],lon[1]),c(lat[2],lon[2]),5,'bing')
data(california.tract)
california.tract <- spTransform(california.tract,osm())

plot(southwest,removeMargin=TRUE)
choro_plot(california.tract,dem = slot(california.tract,"data")[,'med.age'],
		legend.title = 'Median Age',alpha=1)