Urbanistic Polygons

Builds areas based on urban properties and merges similar areas of OSM for analysis reasons.

The algorithm works in three steps:

Build a planar graph based on all types of barriers that are relevant, for example:

Roads.
Water bodies.
Landuse polygons.

This planer graph defines polygons by definition. Assign urban scores to each polygons. We use the following categories but they are configurable:

water
residential
rural
industrial

Merge polygons based on their similarities and the type of barrier between them.