title: How did d3js.org create the hexagonal grid on their home page?
body: <p>On <a href="http://d3js.org" rel="nofollow noreferrer">d3js.org</a> they have this sea of hexagons that is fully interactive, but there are no d3 docs that show how one would even start to make something like this.</p>
  
  <p><img src="https://i.imgur.com/ERfkQ1R.jpg" alt=""></p>
  
  <p>From inspecting the source, you can see it's made with something called hexbin and d3js itself, but there's no other source code that actually helps understand how it's made.</p>
  
  <p>Can anyone shed light on how they implemented this?</p>