---
title: "充电桩分布聚合图"
language: "en"
canonical: "https://l7.antv.antgroup.com/en/examples/point/cluster/cluster2/"
---

# 充电桩分布聚合图

[Live example](https://l7.antv.antgroup.com/en/examples/point/cluster/cluster2/)

[Resource index](/llms.txt)

Provide a DOM element with `id="container"`. The original example source follows.

## Source

```js
import { PointLayer, Scene, Source } from '@antv/l7';
import { GaodeMap } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    center: [120.19382669582967, 30.258134],
    style: 'dark',
    zoom: 3,
  }),
});
scene.on('loaded', () => {
  fetch('https://gw.alipayobjects.com/os/bmw-prod/87e40417-a5da-4fdb-8313-c796ea15f982.csv')
    .then((res) => res.text())
    .then((data) => {
      const dataSource = new Source(data, {
        parser: {
          type: 'csv',
          x: 'lng',
          y: 'lat',
        },
        cluster: true,
      });
      const pointLayer = new PointLayer({
        autoFit: true,
      })
        .source(dataSource)
        .shape('circle')
        .scale('point_count', {
          type: 'quantile',
        })
        .size('point_count', [5, 10, 15, 20, 25])
        .active(true)
        .color('rgb(73,167,86)')
        .style({
          strokeWidth: 1,
          stroke: '#fff',
        });

      // 聚合图标注
      const pointLayerText = new PointLayer({
        autoFit: false,
      })
        .source(dataSource)
        .shape('point_count', 'text')
        .size(15)
        .active(true)
        .color('#fff')
        .style({
          strokeWidth: 0,
          stroke: '#fff',
        });

      scene.addLayer(pointLayer);
      scene.addLayer(pointLayerText);
    });
});
```

## Runtime environment

Before evaluating the example, await this setup in a page containing #container. Supporting files follow below.

```js
await (await import("/src/demo/setup.ts")).default({ container: document.getElementById('container'), path: "/examples/point/cluster/demo/cluster2.js" });
```


## src/demo/setup.ts

```ts
import type { DemoSetupContext } from '@antv/astro-theme-antv';
import * as District from 'district-data';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';

export default async function setup({ container, path }: DemoSetupContext) {
  // Tool pages provide their own React layout and SDK imports.
  if (!path.startsWith('/examples/')) return;
  // Retain only the original globals still used by gallery examples.
  Object.assign(window, { District, GLTFLoader });
  const map = document.createElement('div');
  map.id = 'map';
  container.append(map);
  await import('./map.css');
  // Match the original gallery's shared AMap environment, including raw AMap demos.
  await import('./amap');
}
```

## src/demo/map.css

```css
#map {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 320px;
}

.labelclass {
  position: absolute;
  display: inline;
  cursor: pointer;
  background: rgb(255, 228, 120);
  border: solid 2px #fff;
  padding: 4px;
  white-space: nowrap;
  font:
    bold 12px/18px arial,
    sans-serif;
  color: #fff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  line-height: 30px;
  /* opacity: 0.7; */
  text-align: center;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
```

## src/demo/amap.ts

```ts
import AMapLoader from '@amap/amap-jsapi-loader';

// Preserve the site's development and production SDK registrations.
const credentials = import.meta.env.DEV
  ? { key: '6f025e700cbacbb0bb866712d20bb35c', securityJsCode: '290ddc4b0d33be7bc9b354bc6a4ca614' }
  : { key: 'f59bcf249433f8b05caaee19f349b3d7', securityJsCode: '2653011adeb04230b3a26cc9a780a800' };
window._AMapSecurityConfig = { securityJsCode: credentials.securityJsCode };
await AMapLoader.load({ key: credentials.key, version: '2.0', plugins: ['Map3D'] });
```