Fill the space between lines to highlight the greater-than and less-than differences over time.
Tutorials and Guides
How I Made That: Animated Difference Charts in R
A combination of a bivariate area chart, animation, and a population pyramid, with a sprinkling of detail and annotation.
Ask the Question, Visualize the Answer
Let's work through a practical example to see how asking and answering questions helps guide you towards more focused data graphics.
How I Made That: Searchable Time Series Chart
When there are too many options or categories, it can be helpful to make the data searchable.
The Most Gender-Switched Names in US History
We use some names mostly for boys and some mostly for girls, but then there is a small percentage that, over time, switched from one gender to another. Which names made the biggest switch?