City2Graph · Post-process a graph

Clean up and subset any graph object: remove isolated components, filter by distance, clip to a polygon, build isochrones. Mirrors the Graph Tools panel.

Works on any active graph object, whether it came from a street network, a proximity graph or a morphological graph. The Tool selector picks which of the four operations Apply runs.

The Graph Tools tool selector.

Remove isolated

Keeps only the largest connected component and discards stray fragments.

Keeping only the largest connected component.

Filter by distance

Center object plus a Threshold distance; nodes beyond it are removed.

Filtering the graph by distance from a center.

Clip to area

Keeps only the part of the graph inside the clip mesh’s polygon boundary.

Clipping the graph to a polygon.

Isochrone

Isochrone Center, a Threshold and a Weight Attr (travel_time, for instance) give the reachable sub-network.

An isochrone sub-network from a center node.

Next steps

Export for GeoAI: take a graph into a GNN framework.