Processing spatial data in R

Resources online that are good references:

https://dl.dropboxusercontent.com/u/24648660/ggmap%20useR%202012.pdf


A great post talking about using R as a GIS.

https://github.com/Pakillo/R-GIS-tutorial

This is another great post introducing making maps using ggplot2:
http://www.molecularecologist.com/2016/07/making-maps-in-r-volume-2-ggplots/

http://urbandemographics.blogspot.co.uk/2016/04/creating-tilted-and-stacked-maps-in-r.html