A few topology errors detected about usbuildingfootprints HOT 4 OPEN

Have you repeated with standard Postgres before reporting?

from usbuildingfootprints.

I ran into this issue when processing buildings via the shapely Python library.

A few examples indicate that many instances of self-intersection occur when a single footprint is actually two footprints connected at a single corner. My solution was to split those into two new footprints at the shared corner.

from usbuildingfootprints.

Also encountered a few cases of self-intersecting polygons in the dataset, for example (line 1445618 in Oklahoma.geojson):
{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[-95.936934,36.192659],[-95.936506,36.193613],[-95.936854,36.193715],[-95.936913,36.193583],[-95.936848,36.193564],[-95.936888,36.193474],[-95.936896,36.193476],[-95.936938,36.193381],[-95.937011,36.193402],[-95.937073,36.193263],[-95.937017,36.193247],[-95.937017,36.193247],[-95.937836,36.193487],[-95.937802,36.193563],[-95.937808,36.193565],[-95.937647,36.193923],[-95.938223,36.194092],[-95.938228,36.19408],[-95.938348,36.194115],[-95.938748,36.193226],[-95.938156,36.193053],[-95.938153,36.19306],[-95.938057,36.193032],[-95.938037,36.193077],[-95.938054,36.193082],[-95.937884,36.193461],[-95.937384,36.193314],[-95.937592,36.192851],[-95.937026,36.192685],[-95.937026,36.192686],[-95.936934,36.192659]]]},"properties":{}}

Gives:
TopologyException: Input geom 0 is invalid: Self-intersection at or near point -95.937072838161598 36.193263362831239 at -95.937072838161598 36.193263362831239

from usbuildingfootprints.

These topology errors, while a very small percentage, break the 2dsphere index in MongoDB and thus they cannot be inserted. It would be great if there was a way to make these 100% valid topologies.

from usbuildingfootprints.