Five thousand listings turn into a map of where Berlin is expensive, each cell coloured by the median price of the listings inside it.

• aggregateIntoCells gives each hexagon or square its median, mean and count, so a cell of a few pricey flats colours as strongly as one of many cheap ones. minCount leaves cells of fewer than five listings empty.
• The cells are plain polygons with the statistics as properties, so CustomGeoJSONModule colours them by ['get', 'median'].
• A new cell size is one more aggregateIntoCells call, and gridOrigin keeps the cells in place.

Bring Your Own Data: Clusters and Polygons
20k clustered random points and random polygons around London, rendered with the CustomGeoJSONModule. Both layers are clickable.
Customization
Bring Your Own Data
User Interaction Events
Web

Bring Your Own Data: GeoJSON Heatmap with Custom Module
Render a custom GeoJSON heatmap and labeled symbol layer with the CustomGeoJSONModule, with style-change restore, hover and click events.
Customization
Bring Your Own Data
User Interaction Events
Web

Delivery zones of your own
Show your own GeoJSON polygons and respond to clicks on them
Customization
Bring Your Own Data
Geometry
User Interaction Events
Web

Add Stops to Route (Playground)
Dynamically add and remove intermediate stops on a route by clicking the map
Playground
Routing
Utilities
User Interaction Events
Web