WorldBank-Transport/open-transit-indicators — pull request #186 by ddohler (2014-09-18 23:29:06+00:00)
Title: Store stops buffers, calculate buffer coverage indicator

Calculates the ratio of a union of buffers around GTFS stops within the city boundary area, with the area of the city boundary area itself. Also stores the calculated buffer in the database so that it can be displayed by Windshaft.