What the XYZ?

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      <h1>Census Dotmap</h1>
      <p><a href="store.html">Download or buy a poster</a></blink>
      <h3>What's all this?</h3>
      <p>This is a map of every person counted by the 2010 US, 2011 Canadian, and 2010 Mexican censuses. The map has <b>454,064,098</b> dots - one for each person.</p>
      <h3>Why?</h3>
      <p>I wanted an image of human settlement patterns unmediated by proxies like city boundaries, arterial roads, state lines, &amp;c. Also, it was an interesting challenge.</p>
      <h3>Who is responsible for this?</h3>
      <p>The US, Canadian, and Mexican censuses, mostly. I made the map. I'm <a href="https://twitter.com/ewedistrict">Brandon Martin-Anderson</a>, from the <a href="https://cp.media.mit.edu/">MIT Media Lab</a>. <a href="https://twitter.com/kieran">Kieran Huggins</a> came to the rescue with spare server capacity and technical advice once this took off. <a href="https://twitter.com/vtcraghead">Bill Morris</a> collected and formatted data from the Mexican census.</p>
      <h3>How?</h3>
      <p>I wrote a Python script to generate points from US Census block-level counts, and then generated the tiles with Processing. Here's <a href="methods.html">more detail for the interested</a>.</p>
      <h3>I don't see dots. I see smudges.</h3>
      <p>The dots are very small. Try zooming in.</p>
      <h3>Nobody lives in Central Park/Pier 12/County Lockup/Abandoned Themepark.</h3>
      <p>The census reported that someone lived there.</p>
      <h3>This says someone lives in the middle of a lake.</h3>
      <p>The census reported that someone lives in a block which includes a lake, and that's where their dot was randomly placed. Also, some people live in the middle of lakes.</p>
      <h3>Can I use this?</h3>
      <p>The dotmap tiles are a simple expression of un-copyrighted data; I release them to the public domain.<br/><a rel="license" href="https://creativecommons.org/publicdomain/mark/1.0/">
<img src="https://i.creativecommons.org/p/mark/1.0/80x15.png"
     style="border-style: none;" alt="Public Domain Mark" />
</a></p>
      
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https://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.js