Leaflet.heat

setOptions(options): Sets new heatmap options and redraws it.
addLatLng(latlng): Adds a new point to the heatmap and redraws it.
setLatLngs(latlngs): Resets heatmap data and redraws it.
redraw(): Redraws the heatmap.

A tiny, simple and fast Leaflet heatmap plugin. Uses simpleheat under the hood, additionally clustering points into a grid for performance.

Demos

var heat = L.heatLayer(latlngs, {radius: 25}).addTo(map);

To include the plugin, just use leaflet-heat.js from the dist folder:

<script src="leaflet-heat.js"></script>

Constructs a heatmap layer given an array of LatLng points and an object with the following options:

maxZoom - zoom level where the points reach maximum intensity (as intensity scales with zoom), equals maxZoom of the map by default
max - maximum point intensity, 1.0 by default
radius - radius of each "point" of the heatmap, 25 by default
blur - amount of blur, 15 by default
gradient - color gradient config, e.g. {0.4: 'blue', 0.65: 'lime', 1: 'red'}

Optional third argument in each LatLng point (altitude) represents point intensity.

Added addLatLng, setLatlngs, setOptions and redraw methods.
Added max option and support for different point intensity values (through LatLng third argument).
Added gradient option to customize colors.