AntV L7 is a WebGL-based geospatial data visualization library. Use it for high-performance interactive mapping features.

Install

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Installs to .claude/skills/antv-l7

Activation

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Comprehensive guide for AntV L7 geospatial visualization library. Use when users need to: (1) Create interactive maps with WebGL rendering (2) Visualize geographic data (points, lines, polygons, heatmaps) (3) Build location-based data dashboards (4) Add map layers, interactions, or animations (5) Process and display GeoJSON, CSV, or other spatial data (6) Integrate maps with AMap (GaodeMap), Mapbox, Maplibre, or standalone L7 Map (7) Optimize performance for large-scale geographic datasets
494 chars✓ has a “when” triggerlonger than Claude Code's old 250-char listing cap (fine on current versions)
Intermediate

Key capabilities

  • Initialize map scenes with WebGL rendering
  • Render diverse geographic data layers including points, lines, and polygons
  • Apply visual mappings for color, size, and shape
  • Implement interactive features like popups, markers, and map controls
  • Execute layer animations and trajectory effects
  • Perform data filtering and aggregation for performance

How it works

The library initializes a scene using a specified map provider and adds data-driven layers that map geographic coordinates to visual shapes and styles via WebGL.

Inputs & outputs

You give it
JSON, CSV, or GeoJSON spatial data
You get back
Interactive WebGL-based map visualization

When to use antv-l7

  • Create interactive point maps
  • Render large-scale heatmaps from geographic data
  • Visualize geographic boundaries with polygons
  • Build location-based data dashboards

About this skill

AntV L7 Geospatial Visualization

AntV L7 是基于 WebGL 的大规模地理空间数据可视化引擎,支持多种地图底图和丰富的可视化图层类型。

Quick Start

创建最简单的 L7 地图应用:

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

// 1. 初始化场景
const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    center: [120.19, 30.26],
    zoom: 10,
    style: 'light',
  }),
});

// 2. 添加图层
scene.on('loaded', () => {
  const pointLayer = new PointLayer()
    .source(data, {
      parser: { type: 'json', x: 'lng', y: 'lat' },
    })
    .shape('circle')
    .size(10)
    .color('#5B8FF9');

  scene.addLayer(pointLayer);
});

Core Workflow

L7 的典型开发流程:

1. 场景初始化 (Scene) → 2. 数据准备 → 3. 创建图层 (Layer) → 4. 添加交互 → 5. 优化性能

📚 Reference Documentation

详细文档按领域组织,根据需要加载:

基础功能 (references/core/)

  • scene.md - Scene 初始化、生命周期、方法
  • map-types.md - GaodeMap、Mapbox、Maplibre、Map 的配置

数据处理 (references/data/)

  • geojson.md - GeoJSON 格式、解析、转换
  • csv.md - CSV 数据加载和处理
  • json.md - JSON 数据、OD 数据、路径数据
  • parser.md - Parser 配置、Transform 转换
  • source-raster.md - 栅格数据源(GeoTIFF、多波段、遥感影像)

图层类型 (references/layers/)

视觉映射 (references/visual/)

  • mapping.md - 颜色、大小、形状映射
  • style.md - 透明度、描边、纹理等样式

交互组件 (references/interaction/)

动画效果 (references/animation/)

性能优化 (references/performance/)

使用指南

按用户需求选择文档

用户请求示例加载的文档
"创建一个地图"core/scene.md, core/map-types.md
"显示点位数据"layers/point.md, data/geojson.md
"绘制路径"layers/line.md
"热力图"layers/heatmap.md
"加载卫星影像"layers/tile-raster.md, data/source-raster.md
"添加点击事件"interaction/events.md
"显示弹窗"interaction/popup.md, interaction/layer-popup.md
"添加标注"interaction/components.md, interaction/marker-layer.md
"添加控件"interaction/controls.md

技能组合模式

复杂需求需要组合多个技能:

城市可视化 = scene + polygon + point + events + popup
轨迹动画 = scene + line + animation
热力分析 = scene + heatmap + data/json

依赖检查

使用 metadata/skill-dependency.json 检查技能依赖关系:

{
  "point-layer": {
    "requires": ["scene-initialization"],
    "optional": ["source-geojson", "color-mapping"],
    "nextSteps": ["event-handling", "popup"]
  }
}

版本信息

  • 当前版本: L7 2.x
  • 浏览器支持: Chrome ≥60, Firefox ≥60, Safari ≥12
  • 坐标系: WGS84 (地理坐标) / Plane coordinates (独立 Map)
  • 底图: 高德地图、Mapbox、Maplibre、L7 Map (独立)

最佳实践

  1. 场景初始化优先: 始终从创建 Scene 开始
  2. 数据格式规范: 优先使用 GeoJSON 标准格式
  3. 性能优先: 大数据量时使用数据过滤和聚合
  4. 渐进增强: 先实现基础功能,再添加交互和动画
  5. 错误处理: 添加事件监听和数据验证

快速参考

常用导入

// 核心
import { Scene } from '@antv/l7';
import { GaodeMap } from '@antv/l7-maps';

// 图层
import { PointLayer, LineLayer, PolygonLayer, HeatmapLayer } from '@antv/l7';

// 组件
import { Popup, Marker } from '@antv/l7';

地图样式选项

  • 'light' - 浅色风格
  • 'dark' - 深色风格
  • 'normal' - 标准风格
  • 'satellite' - 卫星影像
  • 'blank' - 空白底图(独立 Map)

坐标格式

[经度, 纬度]; // [120.19, 30.26]
// 经度: -180 ~ 180
// 纬度: -90 ~ 90

元数据

  • skill-dependency.json - 技能依赖关系图
  • skill-tags.json - 中英文标签检索
  • version-compatibility.json - 版本兼容性信息

查看 index.md 获取完整技能列表和导航。

When not to use it

  • Non-geospatial data visualization
  • Environments lacking WebGL support

Prerequisites

WGS84 coordinate dataSupported browser (Chrome, Firefox, or Safari)

Limitations

  • Requires WGS84 coordinate system for geographic maps
  • Browser version constraints for WebGL support

How it compares

Unlike manual canvas or SVG implementations, this library provides a structured engine for managing map lifecycles, layer types, and performance-optimized rendering of large-scale datasets.

Compared to similar skills

antv-l7 side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
antv-l7 (this skill)21moNo flagsIntermediate
d3-visualization74moNo flagsAdvanced
zustand1132moNo flagsIntermediate
threejs-skills614moNo flagsIntermediate

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