In Part 2 of this tutorial, we are going to turn our basic map into a heat map that visualizes the amount of total allegations filed against each precinct. If you missed Part 1, I recommend reading that first. Now that we have a basic working map, let’s use it…

We are going to use React and D3 to build a map of police precincts in NYC. Then we’ll use publicly available records on NYPD misconduct to turn it into a colorized heat map. Let’s get started! Step 1: Create a new react app and install D3 Open a new…