How to Draw Maps with Hatching Lines in R
Fill areas with varying line density to give more or less visual attention. With geographic maps, the technique is especially useful to adjust for population density.
Hatching is an older technique to show varying degrees of shading. More lines and the area appears darker. Fewer lines and the area appears lighter. In the context of visualization, hatching tends to be used less, as filling polygons with solid and/or transparent colors is now trivial to do.
But I’ve been coming back to the method lately. In some cases, it’s been useful and others I think it just looks nice and provides a break from our standard, visually efficient charts.
Most recently, I used hatching to show population density and commute times.
To access this full tutorial and download the source code you must be a member. (If you are already a member, log in here.)
Get instant access to this tutorial and over a hundred more, plus courses, guides, and additional resources.
You'll get unlimited access to hundreds of hours worth of step-by-step visualization courses and tutorials for insight and presentation — all while supporting an independent site. Source code and data is included so that you can more easily apply what you learn in your own work.
The tutorials are very helpful to move from "Oooo, cool!" to how to actually DO the cool.
Members also recieve a weekly newsletter, The Process. Keep up-to-date on visualization tools, the rules, and the guidelines and how they all work together in practice.
See samples of everything you gain access to:
More Tutorials See All →
How to Edit R Charts in Adobe Illustrator
A detailed guide for R users who want to polish their charts in the popular graphic design app for readability and aesthetics.
How to Make an Interactive Choropleth Map
When presented with a static graphic, it can be useful to see specific values after you see overall patterns. This tutorial shows you how to add simple interactions to a choropleth map so you can get specifics for regions.
How to Make Baseline Charts in R
By shifting the baseline to a reference point, you can focus a line chart on relative change, which can improve the visibility of smaller categories.