Introduction, Degrees and Radians, Tangents, Chords and Arcs, The Circle Theorems, Cyclic Polygons, Spheres, Cones and Cylinders, Conic Sections

Welcome to Fastreach Fastreach determines the reachable area of public transport given a start station, date and maximum travel duration (isochrone). These parameters can be configured on the panel in the top-left. The travel duration is capped at 120 minutes.

Between stations Fastreach considers walking as well as trains, trams and busses according to their timetables. The reachable area is visualized via a multi-polygon. It’s properties are described in the top-right panel.

Fastreach uses the weekly timetable data provided by Delfi e.V. from the 15 September 2025. Accordingly, timetables can only be considered complete from 15 September to 21 September. Data for walkways is taken from OpenStreetMap. Fastreach’s source code lives on GitHub.

No personal information is processed on this site. For the map tiles your browser makes requests to OpenStreetMap. Their privacy policy can be found here.

A Python package for creating interactive maps with anywidget and JavaScript mapping libraries - opengeos/anymap

“Thus the most important value of [volunteered geographic information] may lie in what it can tell about local activities in various geographic locations that go unnoticed by the world’s media, and about life at a local level.”

New features including REST support

“As a fast-growing information technology field, GIS systems are now making an appearance in higher education institutions across the nation. In fact, IU now offers several courses which implement or are directed to GIS systems.”