Interactive publication
Back to the catalogueGeometryCase 09 of 13
Self-intersecting polygon
Bowtie/overlapping rings make area and containment undefined.
Class
Case to account for
Affects
2 conversions
01
Detection
turf.kinks returns intersection points.
02
Mitigation
01
Repair upstream (buffer(0) / make-valid)
02
Reject and flag rather than silently fill
03
Affected conversions
PolygonH3 (intersects)
OPENPolygonH3 (fully-contained)
OPEN