anyways-open/urbanistic-polygons

An algorithm to generate a global urban polygon landuse dataset.

Urbanistic Polygons

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

The algorithm works in three steps:

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

• Roads.
• Water bodies.
• Landuse polygons.

2. 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

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

urbanistic-polygons's Issues

Update barrier types

We need extra barrier types:

• waterway=riverbank : https://www.openstreetmap.org/way/9493891#map=15/51.0256/4.1383
• waterway=river : https://www.openstreetmap.org/way/53876868
• landuse=residential
• natural=coastline : https://www.openstreetmap.org/way/77229819#map=15/51.2522/2.9650

Update landuse

Suggested is to by default have nature as landuse, the exception is when something is mapped as not-being-nature.

• Remove water as landuse: Using water is too complex, polygons are huge, we use it as barrier but we assign the default nature.
• We keep the following landuse:
  • residential : People are living here.
  • industrial : Area of industry or an airport, companies, harbour, ...
  • school : Schools.

Check OSM Landuse

Check OSM landuse and associated resources:

https://osmlanduse.org/#15.7534414001797/8.61725/49.51359/0.11/