How the L Train Closure Affected Open-Source Development of CartoDB


Continuing with several recent ( map ( meetups we are diving into geospatial statistics again with CartoDB (

Thank you again to eBay ( for hosting.

Other opportunities for group members include a 20% discount on a three-day Bayes/Stan/MCMC class with Andrew Gelman ( using code nyhackr ( and a 20% discount on Strata ( with code UGNYHACKR20­ ( For more information on these events and others check out the discussion board (

About the talk:

Open source gives developers powerful pieces to put together. All you need are the right ideas, some basic skills, and a great team. The week of the news leak about the L Train's future closure we were wondering how the tools available in CartoDB and those we're experimenting with could shed light on how life would be affected for straphangers through the Canarsie Tube as part of their daily life.

With a mix of open source tools for doing geospatial statistics such as Moran's I and waypoint routing, hard-to-wrangle datasets like the American Community Survey (ACS) and Longitudinal Employer-Household Dynamics (LODES), some beer, and a version of CartoDB that we could push really hard, we learned a lot about New York City, the power of open source, ways to augment our product, and working together as a team.

This talk will discuss the challenges we faced, the tools we tied together, the maps we made, and how CartoDB is more powerful as a result of these couple of dozen hours.

About Andy:

Andy Eschbacher is a map scientist at CartoDB ( where he works with the Research and Data team to bring in new data analysis, innovative cartography, and powerful methods for data enrichment to our open source stack. Find him on Twitter @MrEPhysics (

Pizza ( starts at 6:30, the talk at 7 then the local bar ( after.