Interactive publication
Back to the catalogueGlobalCase 11 of 12
Water-only cells
Cells whose entire footprint is open water (ocean, large lake) carry no population/audience but can still be generated by a naive grid fill over a bounding box or coastal buffer.
Class
Case to account for
Affects
3 conversions
01
Detection
Cell polygon land-fraction approximately 0 against a land/water mask.
02
Mitigation
01
Mask against a land polygon before finalizing a cell set
02
Exclude or down-weight zero-land cells in audience/delivery counts
03
Affected conversions
PolygonH3 (intersects)
OPENPoint+radiusH3
OPENRasterH3
OPEN