An interesting data visualization got my attention recently and I noticed it also got some nice traction on twitter via mentions and re-tweets… enter the Wal-Mart data visualization.
This map shows the viral-like spread of Wal-Mart store locations over time, starting in the early 1960’s in Kansas and up to [almost] present day.
I’ll admit, the paper trail of blog posts and articles describing the project was a bit of a paper chase and had me on a bit of a goose hunt, however, I did uncover some interesting tidbits on the history of this project, starting with an excellent blog post that provided a video describing the efforts to build the map using Freebase and authoring the animation using Modest Maps
Direct link to GZ file here
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