animated isochrone [Video]

Trying to find a way to 'debug' isochrones in pgrouting. I wanted to check that the isochrone advanced more quickly down motorways and trunk roads.

 

The edge of the spreading area is an Isochrone - all the points on this edge are within the same driving time from the start point (George Square in Glasgow). Each frame represents a minute or two's drive time.

 

This animation was created using QGIS, although it was a bit laborious. I changed the filter settings, and saved each rendering as series of sequentially numbered pngs (001.png, 002.png, and so on). Then used ffmpeg to create a movie.

 

used osm2pgrouting with the default driving speed configuration. using data copyright OpenStreetMap contributors.

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Uploaded on November 30, 2014