A little while ago, Mike Bostock, creator of D3, wrote up an awesome tutorial on how to make a map using D3 and TopoJSON. It goes through where to find geo data, the tools you need to manipulate and convert the data, and then how to display and style the data in the browser. It’s a great resource if you’re interested in geographical visualizations.
In the tutorial, Mike makes a simple map of the United Kingdom and its four constituent counties. I thought it’d be fun and good practice to apply the same techniques to make a map of a different place. I landed on my home, New York City. The final product is below (and the code is here):