Reference at Newman Library

NYC Mass Transit Spatial Layers for GIS

The GIS Lab has just launched a new dataset called the NYC Mass Transit Spatial Layers series. These GIS files contain the stops and routes for NYC buses, subways, and trains (the Long Island Rail Road and Metro-North). The files are released under Creative Commons and are available on the Baruch Geoportal at: http://www.baruch.cuny.edu/geoportal/data/nyc_transit/.

We intend to update the data bi-annually. The layers are provided in a shapefile format that can be used with just about any GIS software, and are projected in the local state plane coordinate system commonly used by City agencies. In the future we plan to add an FAQ to provide new users with tips on how to work with the files.

The series was created so that members of the public would have access to well-documented and readily-usable GIS layers of NYC mass transit features. The MTA publishes a data feed for developers that contains data for stops, trips, and routes, but in a format that’s not readily useable in GIS (for example, routes have to be constructed from long strings of coordinates) or readily useable for making basic map representations of routes or stops (the data is in a General Transit Feed Specification format that’s suitable for constructing schedules and timetables). We have essentially taken this raw data, built a process for transforming and cleaning it, and have documented it using spatial metadata standards.

The process was a team effort that CA’s Rachel Weinberg, Josiah Wahlrab, Araby Smyth and I all contributed to. The CUNY Mapping Service at the Center for Urban Research also deserves recognition – they inspired this project through the detailed documentation they provided on their experiences working with this data feed.

lirr_routes