Maps reveal hidden truths of the world's cities - BBC News

MilkmanDansays...

"Maps" doesn't adequately describe the extent of information that things like these convey. They are more like "animated visualizations".

I took a computer graphics class in college where we learned about data visualization. One of the most famous examples in that field is Charles Joseph Minard's map/visualization of Napolean's march into Russia in 1812. On the surface, it is a 2D map. However, the width of the line showing the path of advancement conveys troop numbers, the color denotes whether they were advancing or retreating, and a connected chart below shows the air temperatures that the soldiers were exposed to, etc.

Basically, at a glance you can easily see the broad strokes of the advance and retreat, and you can get much more depth of information if you look a little closer. These kinds of animated visualizations are definitely continuing on in that same vein -- packing a lot of information into a presentation method that is easy to pick up and also very deep with some more inspection.

Wikipedia article about Minard showing that famous Napolean march visualization if anyone is interested:
https://en.wikipedia.org/wiki/Charles_Joseph_Minard

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