Cells or bins are colored based on data. As with all visualization types that use color as the main visual encoding, choose shades carefully.
Tutorials and Guides
How to Make Animated (GIF) Heatmaps in R
Using color as the visual encoding, show changes over time in two dimensions.
Visualizing Patterns on Repeat
Things have a way of repeating themselves, and it can be useful to highlight these patterns in data.
How I Made That: Interactive Heatmap
Add interaction so that you can show different segments of the data and allow comparisons.
More on Making Heat Maps in R
You saw how to make basic heat maps a while back, but you might want more flexibility for a specific data set. Once you understand the components of a heat map, the rest is straightforward.
Calendar Heatmaps to Visualize Time Series Data
The familiar but underused layout is a good way to look at patterns over time.
How People Meet Their Partners
"So how'd you two meet?" There's always a story, but the general ways people meet are usually similar. Here are the most common.
Heatmap shows deaths by age in different countries
This interactive heatmap by Jonas Schöley shows mortality rates by age. Just use…
Basketball Stat Cherry Picking
Wow your friends during the game with random win percentages, based on various player stats.
Tax calculator that considers where you live
Here’s a different look at tax cuts and increases from Reuben Fischer-Baum for…
American Daily Routine
Sleep. Work. Play. The times and everything in between change depending on who you talk to.
Who Earns More Income in American Households?
Compared to 1970, a shift towards women making the higher income.
Fatal Traffic, When and Where
These are the traffic crashes that resulted in deaths in 2015, categorized by month, time of day, and factors involved.
Time-lapse of community-edited pixels
For April Fool’s Day, Reddit ran a subreddit, r/place, that let users edit…
Scrabble data and analysis
Looking for some data to play with? James P. Curley compiled Scrabble data…
Where to Find Jeopardy! Daily Doubles
Placement of Daily Double clues, from season 1 to 31. Watch them play out.
NFL players getting bigger
Football players are getting bigger. Noah Veltman, a developer for the WNYC Data…
Five years of traffic fatalities
I made a graphic a while back that showed traffic fatalities over a…
Where are the biggest box office movies (not) streaming?
After seeing Tristan Louis' list that tallied the streaming availability of 2011's top 100 box office hits, I was curious what it looked like graphically.