Recent See All →

Shifting Clinton and Trump support for different demographic groups

Using data from their Washington Post-ABC News polling, the Washington Post compares shifting support for Clinton and Trump among several …

Food pictures taken with thermal camera

Thermal cameras, which use infrared to detect heat, provide images of temperature. Firefighters can use them to find people in …

Showing missing data in line charts

Missing data is everywhere. Or, I guess technically it’s nowhere. You know what I mean. Missing data is common, especially …

Skittle disconnect

This is what happens when there is a disconnect between data and what it represents. So much wrong.

Make your own tiled cartograms

A challenge of using geographic maps to show data is that larger regions inevitably get more visual real estate. Cartograms …

Finding the wet princes of Bel Air

In case you didn’t know, there’s a drought here in California so there are rules for when you can and …

Statistics lesson on polling

Nate Cohn for the Upshot provides a statistics lesson in the context of election forecasts and why they differ so …

Decision-making with big numbers we can’t really see

In a 2005 paper “If I look at the mass I will never act”: Psychic numbing and genocide, Paul Slovic …

Computed screen time for men and women

In a collaborative effort, the Geena Davis Institute on Gender in Media computed screen time for men and women algorithmically, …

Diversity percentages for US schools

Based on 2014 estimates from the U.S. Department of Education, the Chronicle of Higher Education compiled a straightforward searchable and …

Features See All →

Mapping the Spread of Obesity

A look at the rise for each state over three decades, for men and women.

Income Increased

But not every group’s median income increased by the same amount.

What Alcohol People Around the World Drink

Americans get most of their alcohol from beer, but it’s not like that everywhere.

This is Parenthood

Raising kids is hard to explain. I’ll try anyways. With some charts.

All the National Food Days

Keep track of the 214 days out of the year that are a national food or drink days.

Household Types, Then and Now

Here’s how common each household type is and was — and how the makeup compares to a few decades ago.

Tutorials See All →

Beeswarm Plot in R, to Show Distributions

Try the more element-based approach instead of your traditional histogram or boxplot.

Make a Moving Bubbles Chart to Show Clustering and Distributions

Use a force-directed graph to form a collection of bubbles and move them around based on data.

How to Make Square Pie Charts in R

Instead of traditional pie charts that rely on angles and arc lengths to show parts of a whole, try this easier-to-read version.

Annotating Charts in R

Let the data speak for itself they say. That doesn’t work a lot of the time, and when that happens, you need to explain.

Guides See All →

Shorten the Visualization Path Back to Reality

Visualization is complex, but if I were to break it down simply, I’d say it’s something like the process below. …

5 Tips for Learning to Code for Visualization

Here are some tips to get you started, based on my own experiences with R, and more recently, the JavaScript library d3.js.

What I Use to Visualize Data

“What tool should I learn? ” I hesitate to answer, because I use what works best for me, which isn’t necessarily the best for someone else or the “best” overall. Nevertheless, here’s my toolset.

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.