Wrapping Up

Is this really a map?

Kieran Healy's book Data Visualization: A practical introduction covers the question is your data really spatial?

The map I showed on screen time that probably shouldn't be a map is here.

The maps showing why Donald Trump's Impeach This map don't make sense are on the Observable website.

An alternative way of mapping, especially when you have geographies that are quite small, is to use the {geofacet} package. This Axios map on home prices is a great example of what a map made with this approach can look like.

Raster data

To learn about raster data, check out:

• Chapter 2 of Geocomputation with R

• Chapter 4 of Spatial Statistics for Data Science: Theory and Practice with R

• My interview with Terence Teo on making maps with raster data

General

There are many great resources for making maps. Here are a few of the top ones:

• Data Visualization: A practical introduction

• Analyzing US Census Data: Methods, Maps, and Models in R

• Spatial Statistics for Data Science: Theory and Practice with R

• Geocomputation with R