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Openlayers 5.0 thermal diagram

2022-04-23 19:09:00 【GIS roast lamb leg is delicious】 

import Vector from 'ol/source/Vector.js'
import { Heatmap as HeatmapLayer } from 'ol/layer.js'
import Feature from 'ol/Feature.js'
import Point from 'ol/geom/Point.js'
var webgissource={};
webgissource.heatmapsource=new Vector()
webgissource.heatmapvector = new HeatmapLayer({
    //  Vector data source 
   source: webgissource.heatmapsource,
    blur:  parseInt(50, 10), //  Fuzzy size 
    opacity: 1,
    radius: parseInt(30, 10) //  Hot spot radius 
   })
map.addLayer(webgissource.heatmapvector);   

static heatmaplayer(data){
//data data format {x:107.4,y108.5}  for Loop execution heatmaplayer()
   var points=new Point([data.x,data.y]);
   var iconFeature = new Feature({
      geometry:points,
      attributions:{
        feature:data,
        type:'rlt'
      }
    })
    webgissource.heatmapvector.getSource().addFeature(iconFeature)
  }

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