WebGL已经开启了，但是热力图渲染FeatureLayer还是没有效果。 <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"> <title>Data-driven continuous color - 4.8</title> <link rel="stylesheet" href="http://localhost/arcgis_js_api/library/4.8/esri/css/main.css"> <script> var dojoConfig = { has: { "esri-featurelayer-webgl": 1 } } </script> <script src="http://localhost/arcgis_js_api/library/4.8/init.js"></script> <style> html, body, #viewDiv { padding: 0; margin: 0; height: 100%; width: 100%; } </style> <script> require([ "esri/Map", "esri/views/MapView", "esri/layers/FeatureLayer", "esri/widgets/Legend", "esri/geometry/Point", "esri/Graphic", "esri/tasks/support/Query", "esri/tasks/QueryTask", "esri/renderers/HeatmapRenderer", "dojo/domReady!" ], function ( Map, MapView, FeatureLayer, Legend, Point, Graphic, Query, QueryTask, HeatmapRenderer, ) { var map = new Map({ basemap: "streets" }); var view = new MapView({ container: "viewDiv", map: map, center: [-110.050200, 40.125524], zoom: 4 }); var renderer = { type: "heatmap", field: "Value", colorStops: [ { ratio: 0, color: "rgba(255, 255, 255, 0)" }, { ratio: 0.2, color: "rgba(255, 255, 255, 1)" }, { ratio: 0.5, color: "rgba(255, 140, 0, 1)" }, { ratio: 0.8, color: "rgba(255, 140, 0, 1)" }, { ratio: 1, color: "rgba(255, 0, 0, 1)" } ], minPixelIntensity: 0, maxPixelIntensity: 10 }; var featureLayer = new FeatureLayer({ fields: [{ name: "ObjectID", alias: "ObjectID", type: "oid" }, { name: "Value", alias: "Value", type: "double" }], objectIdField: "ObjectID", geometryType: "point", spatialReference: { wkid: 4326 }, renderer: renderer , source: [{ geometry: new Point({ x: -120, y: 40 }), attributes: { ObjectID: 1, Value: 2 } }, { geometry: new Point({ x: -100, y: 38 }), attributes: { ObjectID: 2, Value: 3 } } ], }); map.add(featureLayer); }); </script> </head> <body> <div id="viewDiv"></div> </body> </html>
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