Creation Pinpoint has used CartoDB's Torque library to create a mapped visualization of the growth of health care professionals on Twitter. The map is interesting itself, animating the number of health care professionals on Twitter over time.
Creation Pinpoint has also released a video of the map with an accompanying animated line chart. The line chart doesn't appear on the actual map, so it is possible that the line chart was superimposed in video post-production. However it should be possible to hack a CartoDB map to display an animated line chart in this way, after all the data is all there.
I think this would be a great addition to the Torque library. If you want to give this hack a go the code for Torque is available on GitHub. If you succeed please let me know.
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