In: Maps21 Dec 2012
Interesting analysis of metro traffic. But I am always left wanting by ordinal rankings. Perhaps coloring the stations themselves in a heatmap manner while desaturating the line colors would have been more useful.
On the same site is the awesome “Evolution of Metrorail” utility that let’s you cycle through the opening of new stations since 1976:
An addictive collection of beautiful charts, graphs, maps, and interactive data visualization toys -- on topics from around the world.