如何在ngx-leaflet中放置热图？

Question

我想将热图放在ngx-leaflet贴图上(使用angular)，如下图所示。

我怎样才能做到这一点呢？

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以下是示例的demo。

Answer 1

安装leaflet、ngx-leaflet、@types/leaflet

npm install leaflet
npm install leaflet.heat
npm install @asymmetrik/ngx-leaflet
npm install --save-dev @types/leaflet

在angular.json中导入leaflet.css

  "styles": ["../node_modules/leaflet/dist/leaflet.css", "styles.css"]

在comp.ts上安装并导入Leaflet.heat，从assets导入要使用的地理数据

import 'leaflet.heat/dist/leaflet-heat.js'
import { addressPoints } from '../assets/realworld.10000'

侦听onMapReady事件，获取对地图的引用并将热点图添加到地图

onMapReady(map) {
    let newAddressPoints = addressPoints.map(function (p) { return [p[0], p[1]]; });
    const heat = L.heatLayer(newAddressPoints).addTo(map);
}

Demo