Understanding and Implementing a Parsimonious Way to Add North Arrow and Scale Bar to ggmap

Plotting Data on a Map using ggplot in R: A Step-by-Step Guide

Setting Coordinate Reference Systems for Effective Geographic Data Visualization with StamenMaps

Customizing ggmap: A Guide to Changing Color Scales and Removing Google Labels

Understanding the Discrepancy Between Browser and R Mapdist (Google API) Results: A Closer Look at the Issues and Solutions

Changing Geom_point Colors Depending on Data in R: A Step-by-Step Guide