choropleth: Binning shapefile polygons based on slot values

In darunabas/bioregion: an R package for mapping biodiversity and conservation

Description

The choropleth function discretizes the values of a quantity based on their quantiles.

Usage

choropleth(x, values, k = 10, ...)

Arguments

x	An object of the class SpatialPolygonsDataFrame.
values	The column in the SpatialPolygonsDataFrame for which to discretize the values of the quantity.
k	Numeric, the desired number of bins to discretize.
...	Further arguments passed to or from other methods.

Value

choropleth

returns a SpatialPolygonsDataFrame with a column with the discretized values

Examples

require(raster)
s <- readRDS(system.file("nigeria/SR_Naija.rds", package= "bioregion"))
k=10
COLOUR <- colorRampPalette(c("blue", "yellow", "red"))(k)
y = choropleth(s, values=s$SR, k)
 
## Not run: 
plot(y, col=COLOUR[y$values], border = NA)
 
## End(Not run)

darunabas/bioregion documentation built on Oct. 27, 2019, 6:57 a.m.