Bivariate Area Charts in R

Quickly compare two time series variables with this line-area chart hybrid that originated in the 1700s.

How to Make Maps in R That Include Alaska and Hawaii

The conterminous United States always gets the attention, while Alaska and Hawaii are often left out. It is time to bring them back into view.

How to Map and Use GeoTIFF Files in R

It's like working with a bunch of tiny dots, and oh look, all of sudden patterns emerge.

How to Make Horizon Graphs in R

The relatively new and lesser known time series visualization can be useful if you know what you're looking at, and they take up a lot less space.

How to Make Variable Width Bar Charts in R

The code to create these bar chart variations is almost the same as if you were to make a standard bar chart. But make sure you get the math right.

A Course for Visualization in R, Taking You From Beginner to Advanced

Where to start? What to learn next? Here's a course to help take you from beginner to advanced.

How to Make Dot Plots in R

It's easy to draw dots. The challenge is to make them meaningful and readable.

How to Make Line Charts in R

Learn to draw lines wherever and however you want, and you've got yourself some flexibility.

R Cheat Sheet and Guide for Graphical Parameters

You can customize graphics in R with par(), but the docs are mostly text and just organized alphabetically. Here is a more visual reference, categorized by what you can change. Plus, a one-page printout.

How to Make and Use Bar Charts in R

The chart type seems simple enough, but there sure are a lot of bad ones out there. Get yourself out of default mode.

Making an Interactive Map with Category Filters

Let readers focus on the regions they care about to make their own comparisons and conclusions.

Loading Data and Basic Formatting in R

It might not be sexy, but you have to load your data and get it in the right format before you can visualize it. Here are the basics, which might be all you need.