OSMnx · Measure accessibility

Walking isochrones around a point in Burjassot, a single-radius neighborhood, and node clusters by network distance. Mirrors the Accessibility panel.

Needs a projected walk network (Clean up the graph).

1. Set the center

Pick the Center Node with the eyedropper. Everything below measures out from it.

Selecting the isochrone center node.

2. Isochrones

Trip Times 5, 10, 15, 20 minutes at a Travel Speed of 4.5 km/h is a reasonable walking baseline. Mode only changes the polygon shape: Buffer Union gives smooth blobs, Convex Hull simpler outlines.

Nested walking isochrones around the center.

3. Ego subgraph

Extracts the sub-network within a network-distance radius of the center node, the quickest way to isolate one neighborhood.

The ego subgraph around the center node.

4. Network DBSCAN

Clusters nodes by network rather than straight-line distance, using eps_meters and min_samples.

Network DBSCAN clusters colored by label.

Next steps

Compute statistics: morphometrics and street orientation.

Back to top