---
title: "西湖区地图"
language: "zh"
canonical: "https://l7.antv.antgroup.com/zh/examples/choropleth/administrative/xihu-district/"
---

# 西湖区地图

[运行示例](https://l7.antv.antgroup.com/zh/examples/choropleth/administrative/xihu-district/)

[资料索引](/llms.txt)

页面需要一个 `id="container"` 的 DOM 元素。以下为原始示例源码。

## 源码

```ts
import { GaodeMap, Scene } from '@antv/l7';
import { Choropleth } from '@antv/l7plot';

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    style: 'blank',
    center: [120.19382669582967, 30.258134],
    zoom: 3,
  }),
});

const choropleth = new Choropleth({
  source: {
    data: [{ adcode: 330106, value: 200 }],
    joinBy: {
      sourceField: 'adcode',
      geoField: 'adcode',
    },
  },
  viewLevel: {
    level: 'district',
    adcode: 330106,
  },
  autoFit: true,
  color: {
    field: 'value',
    value: ['#B8E1FF', '#7DAAFF', '#3D76DD', '#0047A5', '#001D70'],
    scale: { type: 'quantize' },
  },
  style: {
    opacity: 1,
    stroke: '#ccc',
    lineWidth: 0.6,
    lineOpacity: 1,
  },
  label: {
    visible: true,
    field: 'name',
    style: {
      fill: '#000',
      opacity: 0.8,
      fontSize: 10,
      stroke: '#fff',
      strokeWidth: 1.5,
      textAllowOverlap: false,
      padding: [5, 5],
    },
  },
  state: {
    active: { stroke: 'black', lineWidth: 1 },
  },
  tooltip: {
    items: ['name', 'adcode', 'value'],
  },
  zoom: {
    position: 'bottomright',
  },
  legend: {
    position: 'bottomleft',
  },
});

scene.on('loaded', () => {
  choropleth.addToScene(scene);
});
```

## 运行环境

运行示例前，先在含有 #container 的页面中等待以下初始化完成。相关文件附于文末。

```js
await (await import("/src/demo/setup.ts")).default({ container: document.getElementById('container'), path: "/examples/choropleth/administrative/demo/xihu-district.ts" });
```


## 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'] });
```