A cartogram is a map in which the geometry of regions is distorted in order to convey the information of an alternate variable. The region area will be inflated or deflated according to its numeric value. In R, the cartogram
package is the best way to build it, as illustrated in the examples below.
cartogram
package: step by stepThe cartogram package allows to build cartograms in R. It requires a geospatial object
as input, with a numeric variable in the data slot. This variable will be used to distort region shape. The following example will guide you through the process:
A hexbin map is a map where each region is represented as an hexagon. It is possible to apply a cartogram algorithm to such a map, as suggested in the example below. Note that you probably want to explore the hexbin map section before making a cartogram with it.
The following example describes extensively how to make a smooth transition between a choropleth map and a cartogram. This is possible thanks to the tweenR
and the gganimate
libraries. See the explanations here. See the animation section for more examples of animation with R
.