Polygonization
- Polygonize OSM streets
- Polygonize a set of lines
- Polygonize a set of isolines with bounding box
- Find area enclosed by a set of lines
Polygonize OSM streets
https://gis.stackexchange.com/questions/331529/split-streets-to-create-polygons
Polygonize a set of lines
https://gis.stackexchange.com/questions/231237/making-linestrings-with-adjacent-lines-in-postgis
Polygonize a set of isolines with bounding box
https://gis.stackexchange.com/questions/127727/how-to-transform-isolines-to-isopolygons-with-postgis