Plotting a map with ggplot2, color by tile
Introduction Last week I was playing with creating maps using R and GGPLOT2. As I was learning I realized information about creating maps in ggplot is scattered over the internet. So here I combine all that knowledge. So if something is absolutely wrong/ ridiculous / stupid / slightly off or not clear, contact me or open an issue on the github page.
When you search for plotting examples you will often encounter the packages maps and mapdata.
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