[matallo]

> Next up was the laborious process of determining which bus lines one could actually take to each tennis court. My approach was 100% analog, starting from the top of the alphabetical list of tennis courts (Alamo Square) and marching straight through to the end (Youngblood Coleman), noting all of the bus lines that had a stop within reasonable walking distance to a court.

As a cartography nerd myself I was surprised just one comment suggested using GIS and geospatial analysis to match bus lines to tennis courts. Actually this very analysis could be made via services that provide a visual interface such as Mapbox or CARTO.

I recommend watching this documentary where Roger Tomlinson ("father of GIS") is highlighted https://www.youtube.com/watch?v=3VLGvWEuZxI

For those interested in learning to create maps on the web and visualize geospatial data CARTO also has a free MOOC site https://carto.com/academy/

Disclosure: I used to work at CARTO