Clustering markers on mapbox / leaflet

Question

I\'m trying to set up a clustered map on mapbox, like http://leaflet.github.io/Leaflet.markercluster/example/marker-clustering-realworld.388.html

But their example uses

Answer 1

Create a geoJson layer and then add that layer to MarkerCluster:

 var markers = new L.MarkerClusterGroup();
 var geoJsonFeature =  = {
  "type": "Feature",
  "properties": {
    "name": "Coors Field",
    "amenity": "Baseball Stadium",
    "popupContent": "This is where the Rockies play!"
  },
  "geometry": {
    "type": "Point",
    "coordinates": [-104.99404, 39.75621]
  }
 };
 var geoJsonLayer = L.geoJson(geoJsonFeature);

 markers.addLayer(geoJsonLayer);
 map.addLayer(markers);