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Last data update: 2014.03.03
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R: lifted from choropleth in the USCensus2000 package
| spatialChoropleth | R Documentation |
lifted from choropleth in the USCensus2000 package
Description
produces a choropleth plot for a SpatialPolygonsDataFrame
Usage
spatialChoropleth(sp, color ,quantileBin=FALSE, palette, alpha=1,
main = NULL, sub = "", legend.loc = "bottomleft",
legend.title ,add=TRUE,border="transparent", ...)
Arguments
sp |
a SpatialPolygonsDataFrame
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color |
the variable to map to color (either the name in x or a vector)
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quantileBin |
should color be devided into quantile bins. If true, 5 bins are useds. alternatively
quantileBin can be set to the number of desired bins
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palette |
A color scale (See the scales package)
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alpha |
transparency
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main |
title
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sub |
subtitle
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legend.loc |
legend location
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legend.title |
title
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add |
add to current plot
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border |
polygon border type
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... |
additional parameters for plot
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Examples
## Not run:
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)
spatialChoropleth(california.tract,'med.age',
legend.title = 'Median Age',alpha=1)
## End(Not run)
Results
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providing 
.