Area hierarchy QA checks
For some time i was thinking about a check for hierarchy in areas. For example
the amenity=parking for a school should be completely within the surrounding
amenity=school and not cross the outer boundary.
I implemented the first checks which checks leisure and amenity for crossing themselves or landuse/natural.
One of the huge error sources are leisure=nature_reserve which are basically
above everything else. IMHO they should not be a leisure but some type
of boundary relation. For now i excluded the nature_reserves as then
all nature reserves would be red.
Here is a very simple example as a cropped screenshot from josm. The amenity=parking
should either be completely within the surrounding amenity=hospital or
outside of that amenity.
There are cornercases where this might not actually be correct but i havent found that many yet.
The output of the checks is currently available for some German states e.g. NRW, RLP, NDS, HE as the other landuse, natural and building overlaps checks i am running.
Here is the example of the Hannover region:
https://osm.zz.de/dbview/?db=landuseoverlap-nds&layer=hierarchy#52.38147,9.7296,12z