Introductory tutorial on graphical display of geographical information in R, to contribute to teaching material. For the context of this tutorial and a video introduction, please see here: http://robinlovelace.net/r/2014/01/30/spatial-data-with-R-tutorial.html
All of the information needed to run the tutorial is contained in a single pdf document that is kept updated: https://github.com/Robinlovelace/Creating-maps-in-R/raw/master/intro-spatial-rl.pdf
If you have any feedback on this tutorial please let me know and feel free to contibute by branching the repository and editing the main .Rmd file ("intro-spatial.Rmd"). Happy mapping!