leglabs

0th

Percentile

Make legend labels

leglabs makes character strings from the same break points. The plot.polylist() function may be used as a generic S3 method.

Keywords
spatial
Usage
leglabs(vec, under="under", over="over", between="-")
Arguments
vec
vector of break values
under
character value for under
over
character value for over
between
character value for between
See Also

findInterval

Aliases
  • leglabs
Examples
mappolys <- readShapeSpatial(system.file("shapes/columbus.shp", package="maptools")[1], ID="NEIGNO")
brks <- round(quantile(mappolys$CRIME, probs=seq(0,1,0.2)), digits=2)
colours <- c("salmon1", "salmon2", "red3", "brown", "black")
plot(mappolys, col=colours[findInterval(mappolys$CRIME, brks,
 all.inside=TRUE)])
legend(x=c(5.8, 7.1), y=c(13, 14.5), legend=leglabs(brks),
  fill=colours, bty="n")
invisible(title(main=paste("Columbus OH: residential burglaries and vehicle",
 "thefts per thousand households, 1980", sep="")))
Documentation reproduced from package maptools, version 0.7-34, License: GPL (>= 2)

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