In the previous post I discussed some reasons to use R instead of Excel to analyze and visualize data and provided a brief introduction to the R programming language. That post used an example of letters sent to the sixteenth-century merchant Daniel van der Meulen in 1585. One aspect missing from the analysis was a geographical visualization of the data. This post will provide an introduction to geocoding and mapping location data using the ggmap package for R, which enables the creation of m...
