Leaflet Smooth Heatmap

Serverless smooth and unbroken heatmap tile layer.

Live Demo

Description

Canvas tile layer. Each tile filled with grid of rectangles. Rectangle color requested by coordinates of it center.

Not intended for use on low-performance devices.

Installation

1. Install with npm

npm install leaflet-smooth-heatmap

2. Import JS dependencies

import { SmoothHeatmapLayer } from 'leaflet-smooth-heatmap';

or include src/index.js to your bundle and use plugin through global L variable

Usage

const options = {
  canvasSize: 5,
  getColorForLatLng: (lat, lng) => `rgba(${90 + lat}, ${180 + lng}, 100, .5)`
};
map.addLayer( new SmoothHeatmapLayer(options)) );

Example with data point interpolation in ./docs

Options

Name	Description	Type	Default
canvasSize	Size of rectangles in canvas (low values influence on performance)	Number	3
getColorForLatLng	Return color for point coordinates. Arguments - lat, lng	Function	function() { return 'rgba(0, 0, 0, 0);' }