leaflet-layerindex

Leaflet.LayerIndex
==================

Efficient spatial index for Leaflet layers. It works recursively
for `L.FeatureGroup objects.

Requires the Magnificient RTree.js

Check out the live demo

Usage
-----

$3

`

L.Map.include(L.LayerIndexMixin);

var map = L.map(...);
...
var layer = L.GeoJSON(data).addTo(map);
map.indexLayer(layer);

// Search visible features for example
map.on('moveend', function () {
var shown = map.search(map.getBounds());
console.log(shown.length + ' objects shown.');
});

`

$3

`

L.IndexedGeoJSON = L.GeoJSON.extend({
includes: L.LayerIndexMixin,

initialize: function (geojson, options) {
// Decorate onEachFeature to index layers
var onEachFeature = function (geojson, layer) {
this.indexLayer(layer);
if (this._onEachFeature) this._onEachFeature(geojson, layer);
};
this._onEachFeature = options.onEachFeature;
options.onEachFeature = L.Util.bind(onFeatureParse, this);

// Parent initialization
L.GeoJSON.prototype.initialize.call(this, geojson, options);
}
});


var layer = L.IndexedGeoJSON(data).addTo(map);

var aroundToulouse = layer.searchBuffer(L.latLng([43.60, 1.44]), 0.1);

``

Authors
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