Wrapping Up
This lesson is called Wrapping Up, part of the Mapping with R course. This lesson is called Wrapping Up, part of the Mapping with R course.
Transcript
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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 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:
Have any questions? Put them below and we will help you out!
Course Content
23 Lessons
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Alex Rees • January 8, 2026
Hi team. This was a great course. What about if we want to create our own simple polygon that becomes a sf object? This seems like something easier achieved with a GUI, but is there a practical way to do it within R? Thanks
David Keyes Founder • January 8, 2026
Good question! I haven't used it but I think the {mapedit} package could do this. See this overview.