Tron-like map of bike journeys reveals London's hubs

I produced the  original video of the pattern of bicycle movements around London about a year ago as part of ongoing research on the visual analytics of cycle behaviour using London's public cycle hire scheme. It is all done with Processing in OpenGL mode to get the glowing trails effect. Of all the visualizations I've produced of these data (again, all with Processing), this is the least 'analytical' but seems to have captured a few people's imagination.

Jo.