World Metro Networks from the Wolfram Demonstrations Project by Hector Zenil
Here we are actually featuring a demonstration of our world metro network data set in a cool visualization tool based in Mathematica. This is a great tool that lets you visualize data as well as measure many metrics in a simple way; see many more demonstrations here. The visualization was rendered by Hector Zenil, who has done great work on complexity and complex systems. Make sure to visit his lab, the Algorithmic Nature Group.