measurement_centerOfMass
Calculate the center of mass for any GeoJSON geometry to find its weighted center point based on shape distribution using WGS84 coordinates.
Instructions
计算 GeoJSON 对象的质心。
该函数使用 Turf.js 库的 centerOfMass 方法,计算给定 GeoJSON 对象的质心。
Args: geojson: GeoJSON 对象 - 类型: str (JSON 字符串格式的 GeoJSON) - 格式: 任何有效的 GeoJSON 对象 - 坐标系: WGS84 (经度在前,纬度在后) - 示例: '{"type": "Polygon", "coordinates": [[[-81, 41], [-88, 36], [-84, 31], [-80, 33], [-77, 39], [-81, 41]]]}'
Returns: str: JSON 字符串格式的 GeoJSON Point 特征 - 类型: GeoJSON Feature with Point geometry - 格式: {"type": "Feature", "geometry": {"type": "Point", "coordinates": [lng, lat]}} - 示例: '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-82.5, 35.5]}}'
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 >>> polygon = '{"type": "Polygon", "coordinates": [[[-81, 41], [-88, 36], [-84, 31], [-80, 33], [-77, 39], [-81, 41]]]}' >>> options = '{"properties": {"name": "center of mass"}}' >>> result = asyncio.run(centerOfMass(polygon, options)) >>> print(result) '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-82.5, 35.5]}}'
Notes: - 输入参数 geojson 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) - 质心是基于几何形状的质量分布计算的中心点 - 依赖于 Turf.js 库和 Node.js 环境
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| geojson | Yes | ||
| options | No |