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Taxi ride volume during Super Bowl key moments

A high percentage of Americans are glued to the television or party sample platter during the Super Bowl each year, …

Wind prediction and potential power

As we use up current energy resources, it grows more important to look to alternative energy sources. Wind is one …

Campaign Finance API moves to ProPublica

Back in 2008, the New York Times rolled out a campaign finance API so that you could easily access data …

Catalog of criminal justice data

There’s a lot of data on criminal justice — prison populations, crime rates, police policies, etc — but it can …

Role of empathy in visualization

On the PolicyViz podcast, Kim Rees of Periscopic and Mushon Zer-Aviv of Shual Design Studio discuss whether or not empathy …

Small multiples for NBA game differentials

Adam Pearce charted minute-by-minute point differentials for NBA games during the 2014-15 season. To squeeze distribution in, I had to …

Game: Guess the correlation

Guess the Correlation is a straightforward game where you do just that, and it’s surprisingly fun. You get a scatterplot …

Sum of life’s parts

What if you relived life’s activities in big clumps? Thirty years of sleeping in one go. Five months sitting on …

Same source, different styles

Jaakko Seppälä drew ten comic characters, each in its original style and in the style of the other nine. It’s …

Satellite time-lapse of Earth

Charlie Loyd, who works with satellite imagery at Mapbox, put together a 12-second time-lapse of Earth using a day of …

Features See All →

How You Will Die

So far we’ve seen when you will die and how other people tend to die. Now let’s put the two together to see how and when you will die, given your sex, race, and age.

Causes of Death

There are many ways to die. Cancer. Infection. Mental. External. This is how different groups of people died over the past 10 years, visualized by age.

10 Best Data Visualization Projects of 2015

These are my picks for the best of 2015. As usual, they could easily appear in a different order on a different day, and there are projects not on the list that were also excellent.

A Day in the Life of Americans

I wanted to see how daily patterns emerge at the individual level and how a person’s entire day plays out. So I simulated 1,000 of them.

Most Common Use of Time, By Age and Sex

Typical time use varies by who you talk to. This interactive shows you the differences when you vary age and sex.

Counting the Hours

Every day is a bit different, but here is a wideout view of how Americans spend their days. Compare with your own time use.

Tutorials See All →

How to Customize Axes in R

For presentation purposes, it can be useful to adjust the style of your axes and reference lines for readability. It’s all about the details.

How to Make an Interactive Bar Chart With a Slider

Provide a slider for the standard bar chart so that users can shift focus to a point of interest.

Animated Pyramid Chart in R

Make a bunch of charts, string them together like a flip book, and there’s your animation. Sometimes good for showing changes over time. Always fun to play with.

Bivariate Area Charts in R

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

Guides See All →

Venn Diagrams: Read and Use Them the Right Way

Venn diagrams seem straightforward, but why all the mistakes? Here’s a guide to avoid the snafus.

Bar Chart Baselines Start at Zero

There are visualization rules and there are visualization suggestions. Most are suggestions. The ones that are rules exist because of how our brains process visual information. There’s just no getting around it.

Real Chart Rules to Follow

There are rules—usually for specific chart types meant to be read in a specific way—that you shouldn’t break. When they are, everyone loses. This is that small handful.

Horizon Graphs, with a Food Pricing Example

The rarely used chart type for time series data is actually quite nice, once you get the hang of it. Although it does have its limitations.