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【2025最新】ArcGIS 点聚合功能实现全教程（进阶版）

news 2025/9/24 8:43:03

ArcGIS 点聚合功能实现全教程（进阶版）

本教程聚焦点数据生成、多类别样式配置、聚合开关控制及类别筛选等核心功能的进阶实现逻辑，深入解析点聚合功能进阶用法。本文为《【2025最新】ArcGIS for JS点聚合功能实现》进阶版，关于地图初始化、模块导入、基础组件配置等入门内容不再赘述。

文章目录

ArcGIS 点聚合功能实现全教程（进阶版）
- 效果图
- 实现功能
- 一、核心功能实现步骤
- - （一）点要素图层创建
  - （二）点聚合功能配置
  - （三）辅助功能实现
- 二、其他
- 三、全部代码
- - index.html
  - tiandituLoader.js

工具 /插件/系统名	版本	说明
ArcGIS for JavaScript	4.33	适用4.28 - 4.33版本

效果图

效果1	效果2

实现功能

聚合开关切换：通过 “启用 / 禁用聚合” 按钮控制聚合状态，点击时切换图层featureReduction属性（聚合模式 / 非聚合模式），并同步更新按钮文本，实现交互化聚合控制。
类别条件筛选：通过下拉框提供 “全部 + 4 个类别” 的筛选选项，选择后触发图层筛选逻辑，仅显示符合category条件的点要素，同时关闭当前弹窗避免信息干扰，实现精准数据筛选。
聚合样式：不同类别的聚合簇采用对应的图标。

一、核心功能实现步骤

（一）点要素图层创建

定义数据结构：设置字段信息，包含唯一标识、类别与数值字段

fields: [{name: "ObjectID",alias: "ObjectID",type: "oid"}, {name: "category",alias: "类别",type: "integer"}, {name: "value",alias: "值",type: "integer"}]

生成随机点数据：通过generateRandomPoints函数创建 5000 个随机点，经度范围 0-119，纬度范围 30-60，随机分配 4 个类别

function generateRandomPoints(count) {const points = [];for (let i = 0; i < count; i++) {const lon = (Math.random() * 119); // 经度范围const lat = (Math.random() * 30) + 30;  // 纬度范围// 随机分配类别const category = Math.floor(Math.random() * 4);points.push({geometry: {type: "point",longitude: lon,latitude: lat},attributes: {ObjectID: i,category: category,value: Math.floor(Math.random() * 100)}});}return points;}

设置要素样式：采用唯一值渲染，为 4 个类别分别设置不同样式，包括简单圆形标记与图片标记

renderer: {type: "unique-value",field: "category",uniqueValueInfos: [{value: 0, symbol: {type: 'simple-marker',color: [24, 174, 255, 0.5],size: 16,style: "circle",outline: {color: [24, 174, 255, 0.8],width: 2}},label: "类别1"},// 其他类别样式配置...]}

配置弹窗模板：点击单点时显示类别与数值信息

popupTemplate: {title: "{category}",content: "类别：{category}，值：{value}",}

（二）点聚合功能配置

生成聚合配置：通过generateClusterConfig函数创建聚合参数，包含弹窗模板、标签样式、最小聚合尺寸与最大聚合比例尺

async function generateClusterConfig(layer) {const popupTemplate = await clusterPopupCreator.getTemplates({ layer }).then(res => res.primaryTemplate.value);const { labelingInfo, clusterMinSize } = await clusterLabelCreator.getLabelSchemes({ layer, view }).then(res => res.primaryScheme);return {type: "cluster",popupTemplate,labelingInfo,clusterMinSize,maxScale: 50000};}

实现聚合开关：通过toggleClustering函数切换聚合状态，点击按钮时修改featureReduction属性

function toggleClustering() {let fr = layer.featureReduction;layer.featureReduction = fr && fr.type === "cluster" ? null : featureReduction;toggleButton.innerText = toggleButton.innerText === "启用聚合" ? "禁用聚合" : "启用聚合";}

（三）辅助功能实现

图例组件：创建图例并关联地图视图，展示各类别样式说明

const legend = new Legend({view,container: "legendDiv",});

类别筛选：监听下拉框变化，通过layerView.filter设置筛选条件，筛选特定类别点数据

filterSelect.addEventListener("change", (event) => {const newValue = event.target.value;const whereClause = newValue ? \`category = ${newValue}\` : null;layerView.filter = { where: whereClause };view.closePopup();});

聚合弹窗样式优化：修改聚合区域边界样式，增强视觉辨识度

reactiveUtils.whenOnce(() => view.popup.viewModel).then(() => {view.popup.viewModel.selectedClusterBoundaryFeature.symbol = {type: "simple-fill",style: "solid",color: "rgba(50,50,50,0.8)",outline: { width: 0.5, color: "rgba(50,50,50,0.8)" }};});

二、其他

符号类型匹配：确保点要素使用simple-marker或picture-marker类型，避免因符号类型错误导致渲染失效
类别值匹配：筛选下拉框的value属性需与category字段值一致（0-3），原示例中值为 1-4 需修正为 0-4
按钮初始文本：聚合按钮初始文本应设为 “启用聚合”，与切换逻辑匹配
要素加载时机：所有依赖图层的操作需在layer.when()回调中执行，确保图层加载完成

三、全部代码

index.html

<!doctype html>
<html lang="zh-CN"><head><meta charset="utf-8" /><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" /><title>ArcGIS 点聚合基础示例</title><link rel="stylesheet" href="https://js.arcgis.com/4.33/esri/themes/light/main.css" /><script src="https://js.arcgis.com/4.33/"></script><style>html,body,#viewDiv {height: 100%;width: 100%;margin: 0;padding: 0;}#infoDiv {background: white;padding: 10px;}</style><script type="module">import { loadTiandituBasemap } from './js/tiandituLoader.js';const [Map,MapView,FeatureLayer,Legend,Expand,clusterLabelCreator,clusterPopupCreator,reactiveUtils,] = await $arcgis.import(["@arcgis/core/WebMap.js","@arcgis/core/views/MapView.js","@arcgis/core/layers/FeatureLayer.js","@arcgis/core/widgets/Legend.js","@arcgis/core/widgets/Expand.js","@arcgis/core/smartMapping/labels/clusters.js","@arcgis/core/smartMapping/popup/clusters.js","@arcgis/core/core/reactiveUtils.js",]);const { tileInfo, config, getUrlTemplate, tiandituBasemap, Basemap, WebTileLayer } = await loadTiandituBasemap();const layer = new FeatureLayer({source: generateRandomPoints(5000),title: "点聚合",fields: [{name: "ObjectID",alias: "ObjectID",type: "oid"}, {name: "category",alias: "类别",type: "integer"}, {name: "value",alias: "值",type: "integer"}],outFields: ["*"],popupTemplate: {title: "{category}",content: "类别：{category}，值：{value}",},renderer: {type: "unique-value",field: "category",uniqueValueInfos: [{value: 0, symbol: {type: 'simple-marker', // 点要素专用符号类型（核心修复点）color: [24, 174, 255, 0.5], // 半透明蓝色（与原需求一致）size: 16, // 点的大小（像素，建议12-20，适配视觉）style: "circle", // 点的形状（circle/方形/square/三角形/triangle等）outline: { // 点的描边（增强辨识度）color: [24, 174, 255, 0.8],width: 2}},label: "类别1"},{value: 1, symbol: {type: "picture-marker",url: "https://picsum.photos/20/20", // 20x20的图片width: "20px",height: "20px",yoffset: "10px" // 图标偏移，使底部对准点位置}, label: "类别2"},{value: 2, symbol: {type: 'simple-marker', // 点要素专用符号类型（核心修复点）color: [24, 14, 255, 0.5], // 半透明蓝色（与原需求一致）size: 16, // 点的大小（像素，建议12-20，适配视觉）style: "circle", // 点的形状（circle/方形/square/三角形/triangle等）outline: { // 点的描边（增强辨识度）color: [24, 14, 255, 0.8],width: 2}}, label: "类别3"},{value: 3, symbol: {type: 'simple-marker', // 点要素专用符号类型（核心修复点）color: [24, 144, 55, 0.5], // 半透明蓝色（与原需求一致）size: 16, // 点的大小（像素，建议12-20，适配视觉）style: "circle", // 点的形状（circle/方形/square/三角形/triangle等）outline: { // 点的描边（增强辨识度）color: [24, 144, 55, 0.5],width: 2}}, label: "类别4"}]}});const map = new Map({basemap: tiandituBasemap,layers: [layer],});const view = new MapView({container: "viewDiv",map,center: [116.39, 39.9],zoom: 4,});reactiveUtils.whenOnce(() => view.popup.viewModel).then(() => {// Override the default symbol representing the cluster extentview.popup.viewModel.selectedClusterBoundaryFeature.symbol = {type: "simple-fill",style: "solid",color: "rgba(50,50,50,0.8)",outline: {width: 0.5,color: "rgba(50,50,50,0.8)",},};});const legend = new Legend({view,container: "legendDiv",});const infoDiv = document.getElementById("infoDiv");view.ui.add(new Expand({view,content: infoDiv,expandIcon: "list-bullet",expanded: true,}),"top-right",);layer.when().then(generateClusterConfig).then((featureReduction) => {layer.featureReduction = featureReduction;// 核心添加,切换点聚合模式，const toggleButton = document.getElementById("toggle-cluster");toggleButton.addEventListener("click", toggleClustering);// To turn off clustering on a layer, set the// featureReduction property to nullfunction toggleClustering() {let fr = layer.featureReduction;layer.featureReduction = fr && fr.type === "cluster" ? null : featureReduction;toggleButton.innerText =toggleButton.innerText === "启用聚合"? "禁用聚合": "启用聚合";}view.whenLayerView(layer).then((layerView) => {const filterSelect = document.getElementById("filter");filterSelect.addEventListener("change", (event) => {const newValue = event.target.value;const whereClause = newValue ? `category = ${newValue}` : null;console.log(whereClause)layerView.filter = {where: whereClause,};view.closePopup();});});}).catch((error) => {console.error(error);});async function generateClusterConfig(layer) {// generates default popupTemplateconst popupTemplate = await clusterPopupCreator.getTemplates({ layer }).then((popupTemplateResponse) => popupTemplateResponse.primaryTemplate.value);// generates default labelingInfoconst { labelingInfo, clusterMinSize } = await clusterLabelCreator.getLabelSchemes({ layer, view }).then((labelSchemes) => labelSchemes.primaryScheme);return {type: "cluster",popupTemplate,labelingInfo,clusterMinSize,maxScale: 50000};}function generateRandomPoints(count) {const points = [];for (let i = 0; i < count; i++) {const lon = (Math.random() * 119); // 经度范围const lat = (Math.random() * 30) + 30;  // 纬度范围// 随机分配类别const category = Math.floor(Math.random() * 4);points.push({geometry: {type: "point",longitude: lon,latitude: lat},attributes: {ObjectID: i,category: category,value: Math.floor(Math.random() * 100)}});}return points;}</script>
</head><body><div id="viewDiv"></div><div id="infoDiv" class="esri-widget">类别筛选（category）:<select id="filter" class="esri-select"><option value="">全部</option><option value="1">类别1</option><option value="2">类别2</option><option value="3">类别3</option><option value="4">类别4</option></select><div style="padding-top: 10px"><button id="toggle-cluster" class="esri-button">点聚合</button></div><div id="legendDiv"></div></div>
</body></html>

tiandituLoader.js


/*** 天地图加载公共模块* 功能：封装天地图底图加载逻辑，返回配置好的Basemap实例* 依赖：ArcGIS API 4.x*/
export async function loadTiandituBasemap() {try {// 1. 按需导入ArcGIS核心模块const [WebTileLayer,Basemap,TileInfo] = await $arcgis.import(["@arcgis/core/layers/WebTileLayer","@arcgis/core/Basemap","@arcgis/core/layers/support/TileInfo",]);// 2. 配置参数（可根据需求调整）const config = {tk: "你的密钥", // 天地图密钥spatialReference: { wkid: 4326 },       // 目标坐标系（WGS84）subDomains: ["0", "1", "2", "3", "4", "5", "6", "7"], // 多子域名tileMatrixSet: "c",                     // 天地图瓦片矩阵集layerType: {vec: "vec", // 矢量底图cva: "cva"  // 矢量注记}};// 3. 定义瓦片信息（匹配WGS84坐标系的瓦片规则）const tileInfo = new TileInfo({dpi: 90.71428571427429,rows: 256,cols: 256,compressionQuality: 0,origin: { x: -180, y: 90 },spatialReference: config.spatialReference,lods: [{ level: 2, levelValue: 2, resolution: 0.3515625, scale: 147748796.52937502 },{ level: 3, levelValue: 3, resolution: 0.17578125, scale: 73874398.264687508 },{ level: 4, levelValue: 4, resolution: 0.087890625, scale: 36937199.132343754 },{ level: 5, levelValue: 5, resolution: 0.0439453125, scale: 18468599.566171877 },{ level: 6, levelValue: 6, resolution: 0.02197265625, scale: 9234299.7830859385 },{ level: 7, levelValue: 7, resolution: 0.010986328125, scale: 4617149.8915429693 },{ level: 8, levelValue: 8, resolution: 0.0054931640625, scale: 2308574.9457714846 },{ level: 9, levelValue: 9, resolution: 0.00274658203125, scale: 1154287.4728857423 },{ level: 10, levelValue: 10, resolution: 0.001373291015625, scale: 577143.73644287116 },{ level: 11, levelValue: 11, resolution: 0.0006866455078125, scale: 288571.86822143558 },{ level: 12, levelValue: 12, resolution: 0.00034332275390625, scale: 144285.93411071779 },{ level: 13, levelValue: 13, resolution: 0.000171661376953125, scale: 72142.967055358895 },{ level: 14, levelValue: 14, resolution: 8.58306884765625e-005, scale: 36071.483527679447 },{ level: 15, levelValue: 15, resolution: 4.291534423828125e-005, scale: 18035.741763839724 },{ level: 16, levelValue: 16, resolution: 2.1457672119140625e-005, scale: 9017.8708819198619 },{ level: 17, levelValue: 17, resolution: 1.0728836059570313e-005, scale: 4508.9354409599309 },{ level: 18, levelValue: 18, resolution: 5.3644180297851563e-006, scale: 2254.4677204799655 },{ level: 19, levelValue: 19, resolution: 2.68220901489257815e-006, scale: 1127.23386023998275 },{ level: 20, levelValue: 20, resolution: 1.341104507446289075e-006, scale: 563.616930119991375 }]});// 4. 构建天地图URL模板（支持多子域名）const getUrlTemplate = (layer) => {return `http://t0.tianditu.gov.cn/${layer}_${config.tileMatrixSet}/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=${layer}&STYLE=default&TILEMATRIXSET=${config.tileMatrixSet}&TILEMATRIX={level}&TILEROW={row}&TILECOL={col}&FORMAT=tiles&tk=${config.tk}`;};// 5. 创建矢量底图图层const vecLayer = new WebTileLayer({urlTemplate: getUrlTemplate(config.layerType.vec),subDomains: config.subDomains,copyright: "天地图 © 国家地理信息公共服务平台",spatialReference: config.spatialReference,tileInfo: tileInfo});// 6. 创建矢量注记图层const cvaLayer = new WebTileLayer({urlTemplate: getUrlTemplate(config.layerType.cva),subDomains: config.subDomains,copyright: "天地图 © 国家地理信息公共服务平台",spatialReference: config.spatialReference,tileInfo: tileInfo});// 7. 创建自定义底图并返回const tiandituBasemap = new Basemap({baseLayers: [vecLayer],referenceLayers: [cvaLayer],title: "天地图矢量图(WGS84)",id: "tianditu-vector-wgs84"});return {tileInfo,config,getUrlTemplate,tiandituBasemap,WebTileLayer,Basemap};} catch (error) {console.error("天地图加载失败：", error);throw new Error("天地图公共模块加载异常，请检查依赖和配置");}
}

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