使用热点图可视化场景中的点

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
const heatmapRenderer = {
  type: "heatmap", // autocasts as new HeatmapRenderer()
  colorStops: [
          { ratio: 0 / 6, color: "rgba(25, 43, 51, 0.6)" },
          { ratio: 1 / 6, color: "rgba(30, 140, 160, 1)" },
          { ratio: 2 / 6, color: "rgba(64, 184, 156, 1)" },
          { ratio: 3 / 6, color: "rgba(73, 214, 181, 1)" },
          { ratio: 4 / 6, color: "rgba(83, 245, 207, 1)" },
          { ratio: 5 / 6, color: "rgba(102, 255, 219, 1)" },
          { ratio: 6 / 6, color: "rgba(158, 255, 233, 1)" }
  ],
  blurRadius: 15,
  referenceScale: 3500,
  maxPixelIntensity: 50,
  minPixelIntensity: 0
};

const layer = new FeatureLayer({
  url: "https://services2.arcgis.com/jUpNdisbWqRpMo35/arcgis/rest/services/Verkehrsunf%C3%A4lle_2019/FeatureServer",
  opacity: 0.75,
  renderer: heatmapRenderer
});