Component wraps heatmap.js
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README.md

ember-leaflet-heatmap-layer

Brings Heatmap.js functionality into Ember-Leaflet.

Installation

ember install ember-leaflet-heatmap-layer

Usage

{{#leaflet-map lat=lat lng=lng zoom=zoom}}

  {{tile-layer url="http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png"}}

  {{heatmap-layer data=data valueField='...' maxValue=... minValue=... }}

{{/leaflet-map}}

Options

  • data heatmap data in format [{lat:24.6408,lng:46.7728,value:3}]
  • minValue minimal value, default 0
  • maxValue maximalValue, default 1
  • latField latitude field name, default lat
  • lngField longitude field name, default lng
  • valueField value field name, default value
  • blur The blur factor that will be applied to all datapoints. The higher the blur factor is, the smoother the gradients will be, default 0.85
  • minOpacity The minimum opacity the lowest value in the heatmap will have (will be overridden if opacity set), default 0
  • maxOpacity The maximum opacity the lowest value in the heatmap will have (will be overridden if opacity set), default 0.8
  • opacity (optional) A global opacity for the whole heatmap. This overrides maxOpacity and minOpacity if set!
  • backgroundColor A background color string in form of hexcode, color name, or rgb(a)
  • gradient An object that represents the gradient (syntax: number string [0,1] : color string), check out the example
  • radius The radius each datapoint will have (if not specified on the datapoint itself), default 2. Radius should be small ONLY if scaleRadius is true (or small radius is intended). If scaleRadius is false it will be the constant radius used in pixels.
  • scaleRadius default true
  • useLocalExtrema if set to false the heatmap uses the global maximum for colorization, defalt true

Gradient example

var gradient = {
    // enter n keys between 0 and 1 here
    // for gradient color customization
    '.5': 'blue',
    '.8': 'red',
    '.95': 'white'
  }

Running

Running Tests

  • npm test (Runs ember try:each to test your addon against multiple Ember versions)
  • ember test
  • ember test --server

Building

  • ember build

For more information on using ember-cli, visit https://ember-cli.com/.