A simple guide to plotting maps in R using the High-resolution map data of the World. Examples are given for plotting the whole world, a selection of individual countries, a map of the United Kingdom or adding locations to your map.
C. Kling, J. Kunegis, S. Sizov, и S. Staab. Proceedings of the 7th ACM international conference on Web search and data mining, стр. 603--612. ACM, (2014)