How To Make Geographic Map Visualizations (10 Must-Know Tidyverse Functions #6)

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This article is part of a R-Tips Weekly, a weekly video tutorial that shows you step-by-step how to do common R coding tasks.

If you are explaining data related to geography or just want to visualize by latitude / longitude location, you need to know ggplot2 & the tidyverse for making maps.

This tutorial will show you how to make a publication-quality visualization! Here are the links to get set up. ????

(Click image to play tutorial)

Working with Map Data

The first thing we need when creating a map is data that represents the latitude and longitude. We need to use a function called map_data() to collect the data in the right structure for a ggplot2 map.

Map Data

Using the map_data() function to collect lat/long data for the entire World.

Collect lat long data for the entire World

Plotting the Map Data with ggplot2

We can use the geom_map() & coord_map() functions to plot the world.

Plot world

Plot world

Visualizing Republican Voting

So what can we do with Map Data + ggplot2? How about visualizing how the US voted in 1976?!

Plot world code

Voting  Map

The look on your coworker’s face speaks volumes. ????

shocked gif

But you don’t have the force yet!

Here’s how to master R programming and become powered by R. ????

Ive got the power

…Your executive management review after you’ve launched your your first Shiny App. ????

Crowd Applause

This is career acceleration.


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