Spatial Analysis
in the Developing World
Measuring Access with
OpenStreetMap & OpenTripPlanner
Spatial Analysis
in the Developing World
Measuring Access with
OpenStreetMap & OpenTripPlanner
Distance from Financial Point to OSM Road, Kenya
# Financial Points
Distance to Nearest Road
Brandon Martin-Anderson's Growing Shortest Path Tree of Seattle
Offsite ATMs, Uganda
| Polygon | Unit | Pop within Access |
|---|---|---|
| Buffer | 5 km | 6,406,973 |
| Isochrone | 1 hour | 4,502,957* |
*2 out of 242 Offsite ATMs were too far from a road to use in Isochrone analysis.
*62 out of 1,254 Commercial Banks were too far from a road to use in Isochrone analysis.
// Edges will only be found if they are closer than this distance
public static final double MAX_DISTANCE_FROM_STREET_METERS = 1000;
private static final double MAX_DISTANCE_FROM_STREET_DEGREES =
MAX_DISTANCE_FROM_STREET_METERS * 180 / Math.PI
/ SphericalDistanceLibrary.RADIUS_OF_EARTH_IN_M;
Useful Resources
- http://docs.opentripplanner.org/en/latest/
- http://conveyal.com/blog/2012/07/02/analyst
- http://www.gatesfoundation.org/What-We-Do/Global-Development/Financial-Services-for-the-Poor
- http://news.spatialdev.com/walksheds-tool/
Phoebe Merritt
pmerritt@spatialdev.com