Here’s where I mostly was in 2012 (h/t @enf): flickr.com/photos/vruba/8342…
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Replying to @vruba
@vruba This is awesome! Yes, I do have a new version of my map in an upcoming blog post!

Jan 3, 2013 · 7:35 PM UTC

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Replying to @aaronpk
@vruba @aaronpk is any of this normalized against trip frequency?
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@built @aaronpk In mine, a given pixel is essentially the sum of the colors of the paths that cross it.