Interactive publication
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Coastal boundary ambiguity
Land/water boundary polygons vary by data vintage and mean-high-water definition; cells right at the coastline can flip land/water classification between sources.
Class
Case to account for
Affects
3 conversions
01
Detection
Compare land-mask membership for the same cell across two boundary vintages/sources; flag disagreements.
02
Mitigation
01
Pin a single authoritative coastline source and vintage
02
Report a land-fraction confidence per coastal cell rather than a binary flag
03
Affected conversions
PolygonH3 (intersects)
OPENAdmin polygonsH3 (max-overlap partition)
OPENRasterH3
OPEN