In short: All Uber and Yellow Cab pick-ups in New York between April and September 2014.
Description: There are 4.5 million Uber pick-ups, and 82.4 million yellow cab pick-ups between April and September 2014. These are added to the image with a log-scale to bring out areas where there are clear differences. The rise of Uber is well documented, but the geographic complexity is often harder to see as the context and requirements of each area vary so quickly. Even within the confines of an airport the distinctions between Uber and Yellow Cabs can be seen.
Point of interest: Previously we’ve seen the uncertainty introduced into a GPS location from interference from the tall buildings. In this image at LaGuardia airport there seems to be a resonant radial artifact in the GPS positions, presumably from a radar tower. What causes the wave-like nature in this image is not clear.
Technical: 6 months of Uber and Yellow Cab pick-up points between April and September 2014. Uber data obtained via FOI request (https://github.com/fivethirtyeight/uber-tlc-foil-response) and Yellow Cab data available at https://nycopendata.socrata.com/. All pick-up points added to the image in log-scale with Uber pick-ups in green and Yellow Cab pickups in yellow. Red therefore is when the two pick-up densities, in log-scale, are similar.