Properties attached to each area analytics display feature.
Type Declaration
id: string
Stable feature identifier (typically the tile centre coordinates stringified
or the H3 cell index).
Remarks
They include all optional metric fields from the API response, a stable id that
MapLibre's promoteId uses for event state tracking, and eventState (from
SupportsEvents), which drives hover/click styling.
Properties attached to each area analytics display feature.