Takes an object produced by choropleth_sf()
, and creates the correspoding choropleth map.
choropleth_ggplot2( sf_object, value = output, n = 7, dig.lab = 2, legend_title = "Class", option = "D", direction = 1 )
sf_object | object of class sf |
---|---|
value | column to shade the polygons |
n | number of clusters (default is 7) |
dig.lab | number of digits in legend (default is 2) |
legend_title | title of legend |
option | a character string indicating the colormap option to use. Four options are available: "magma" (or "A"), "inferno" (or "B"), "plasma" (or "C"), "viridis" (or "D", the default option) and "cividis" (or "E"). |
direction | Sets the order of colors in the scale. If 1, the default, colors are ordered from darkest to lightest. If -1, the order of colors is reversed. |
ggplot map
Martin Haringa
test <- points_to_polygon(nl_postcode2, insurance, sum(amount, na.rm = TRUE)) #> 80 points fall not within a polygon. choropleth_ggplot2(test)