Maps in R: Plotting data points on a map by Max Marchi.
From the post:
In the introductory post of this series I showed how to plot empty maps in R.
Today I’ll begin to show how to add data to R maps. The topic of this post is the visualization of data points on a map.
Max continues this series with datasets from airports in Europe and demonstrates how to map the airports to geographic locations. He also represents the airports with icons that correspond to their traffic statistics.
Useful principles for any data set with events that can be plotted against geographic locations.
Parades, patrols, convoys, that sort of thing.