Interface TrackFeature

One vessel's track as a GeoJSON Feature.

MultiLineString rather than LineString: a gap in recording — an overnight stop, a receiver out of range — starts a new segment, so the line is not drawn across a stretch the vessel did not travel.

interface TrackFeature {
    geometry:
        | { coordinates: [number, number][][]; type: "MultiLineString" }
        | null;
    properties: TrackProperties;
    type: "Feature";
}