Dot Map

Each dot represents a data point. Collectively, geographic patterns emerge.

Tutorials and Guides


Growth of Target, an Animated Map

Watch the growth strategy behind Target stores, starting with the first location in 1962 in Minnesota.

Tracking Capitol rioters through their mobile phone data

For NYT Opinion, Charlie Warzel and Stuart A. Thompson returned to the topic…

Who catches the most fish

Using data from Global Fishing Watch, Hayley Warren and Ian Wishart for Bloomberg…

Mapping perceived canopy tree cover in major cities

Treepedia, from the MIT Senseable City Lab, estimates perceived tree cover at the…

Sunsquatch, the only eclipse map you need

It’s solar eclipse time. There have been a lot of maps leading up…

How Airbnb Visitors Rate Location in Major US Cities

This is how Airbnb visitors judge location, which provides a view into where city centers begin and end.

Bomb threats to Jewish Community Centers

Ken Schwencke and Al Shaw from ProPublica with a set of straightforward maps…

Firearms Dealers vs. Burgers, Pizza, and Coffee

As of May 2016, there were 64,432 licensed firearms dealers and pawnbrokers, which got me wondering how that compares to other businesses.

Top Brewery Road Trip, Routed Algorithmically

There are a lot of great craft breweries in the United States, but there is only so much time. This is the computed best way to get to the top rated breweries and how to maximize the beer tasting experience. Every journey begins with a single sip.

Reviving the Statistical Atlas of the United States with New Data

Due to budget cuts, there is no plan for an updated atlas. So I recreated the original 1870 Atlas using today's publicly available data.

Explorations of People Movements

A new data source gave rise to a different set of visualization projects. We see people.

Burger Place Geography

After looking at pizza places, coffee, and grocery stores, I had to look at burger chains across the country. The data was just sitting there.

Where Bars Outnumber Grocery Stores

A closer look at the age old question of where there are more bars than grocery stores, and vice versa.

Mapping a century of earthquakes

Earthquakes are in the news a lot lately. A quick search shows a…

Pizza Place Geography

Most of the major pizza chains are within a 5-mile radius of where…

Lessons learned from mapping millions of dots

Erica Fischer, known around these parts for her dot maps, describes the lessons…