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Data qualityCase 09 of 14

Missing polygons

A source dataset silently omits polygons for some regions (e.g. a boundary file missing a newly incorporated municipality), leaving gaps in cell coverage with no explicit null marker.

Class
Case to account for
Affects
3 conversions
01

Detection

Expected region-id list (from a canonical registry) has entries absent from the delivered geometry set.

02

Mitigation

01
Reconcile delivered feature ids against a canonical registry every load
02
Alert on any expected id with no matching geometry rather than fail silently
03

Affected conversions

Admin polygonsH3 (max-overlap partition)
OPEN
Admin polygonsH3 (weighted crosswalk)
OPEN
PolygonH3 (intersects)
OPEN