MapTimeline

objector null

The map's docked playback timeline — at most one per map. It names the layer whose time filter is expanded into the map-docked widget with playback; the window itself stays that layer's timerange filter. The layer must be non-aggregated (points/heatmap draw real features; hex/grid cells are aggregated server-side and cannot animate) and must already carry a timerange filter on the field. Null means no timeline is docked.

• layerIdstringrequired

  A layer of this map.

• fieldstringrequired

  The temporal field — must match one of the layer's timerange filters.

• speednumber

  Sweep-speed multiplier (0.25–32); 1 crosses the extent at the base rate. Defaults to 1.