Heatmap Layer

The HeatmapLayer is either used by the map style or can be added to the map programmatically to symbolize data on the map.

Basic Usage

late final MapController _controller;

@override
Widget build(BuildContext context) {
  return MapLibreMap(
      options: MapOptions(center: Position(9.17, 47.68)),
      onMapCreated: (controller) => _controller = controller,
      onStyleLoaded: () async {
        const earthquakes = GeoJsonSource(
          id: _sourceId,
          data:
          'https://maplibre.org/maplibre-gl-js/docs/assets/earthquakes.geojson',
        );
        await _controller.addSource(earthquakes);
        const layer = HeatmapLayer(id: _layerId, sourceId: _sourceId);
        await _controller.addLayer(layer);
      }
  );
}

Check out the example app for to learn more.

Style & Layout

Use the paint property to change the style and the layout property to change the behavior on the map.

Read the Paint & Layout chapter to learn more on this topic.