How to improve the feature layer renderer performance?
6213
11
01-02-2017 06:27 PM
by
When large amounts of points (about 40,000) on the map (no clusters allowed), the pan / zoom operator will pending for a long time. Is there any way to improve this?
The constraints include:
1. no cluster allowed
2. using arcgis js api 3.X
3. at least 40,000 points
4. no tiles
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Students</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.18/esri/css/esri.css">
</head>
<body>
<div id="map" style="width: 100%; height: 900px;"></div>
<script src="https://js.arcgis.com/3.18/"></script>
<script type="text/javascript">
require(["esri/map", "esri/layers/FeatureLayer", "esri/symbols/SimpleMarkerSymbol", "esri/renderers/SimpleRenderer", "esri/Color"], function(Map,FeatureLayer,SimpleMarkerSymbol,SimpleRenderer,Color){
var map = new Map("map", {
basemap: "streets",
center: [-87.252628,30.639658],
zoom: 10,
logo: false,
showAttribution: false
});
var url = "https://services.arcgis.com/a3bwkdJaVo8mjuX0/arcgis/rest/services/Escambia_Students/FeatureServer/0";
var studentLayer = new FeatureLayer(url,{
id: "student",
mode: FeatureLayer.MODE_SNAPSHOT,
outFields: ["*"]
});
var symbol = new SimpleMarkerSymbol().setColor(new Color("blue")).setSize(6);
var renderer = new SimpleRenderer(symbol);
studentLayer.setRenderer(renderer);
map.addLayers([studentLayer]);
});
</script>
</body>
</html>by
by
At last, I choose to override the dojo.shape.Container.remove function.
shape.Container.remove = function(a, c)
{// override the remove
return this;
}It seems better now on map pan operator. But I don't sure that this will influence others or not.
