transformation_voronoi
Generate Voronoi polygons from point data to partition geographic space into regions based on proximity to input points.
Instructions
生成 Voronoi 多边形。
该函数使用 Turf.js 库的 voronoi 方法，从点集生成 Voronoi 多边形。
Args: points: 点集 GeoJSON FeatureCollection - 类型: str (JSON 字符串格式的 GeoJSON) - 格式: 必须符合 GeoJSON FeatureCollection 规范，包含 Point 特征 - 坐标系: WGS84 (经度在前，纬度在后) - 示例: '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-75.343, 39.984]}}, ...]}'
options: 可选参数配置
- 类型: str (JSON 字符串) 或 None
- 可选字段:
- bbox: 裁剪矩形边界框 (默认: [-180,-85,180,-85])
- 示例: '{"bbox": [-70, 40, -60, 60]}'Returns: str: JSON 字符串格式的 Voronoi 多边形集合 GeoJSON FeatureCollection - 类型: GeoJSON FeatureCollection with Polygon features - 格式: {"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [...]}}]} - 示例: '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[-75.35, 39.98], [-75.34, 39.99], ...]]}}, ...]}'
Raises: Exception: 当 JavaScript 执行失败、超时或输入数据格式错误时抛出异常
Example: >>> import asyncio >>> points = '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-75.343, 39.984]}}]}' >>> options = '{"bbox": [-70, 40, -60, 60]}' >>> result = asyncio.run(voronoi(points, options)) >>> print(result) '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[-75.35, 39.98], [-75.34, 39.99], ...]]}}, ...]}'
Notes: - 输入参数 points 和 options 必须是有效的 JSON 字符串 - 坐标顺序为 [经度, 纬度] (WGS84 坐标系) - 算法来自 d3-voronoi 包 - 每个输入点对应一个输出多边形 - 依赖于 Turf.js 库和 Node.js 环境
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| points | Yes | ||
| options | No |