Turf-MCP

计算两个多边形的差异。

该函数使用 Turf.js 库的 difference 方法，计算两个多边形的几何差异。

Args: featureCollection: 包含两个多边形的 GeoJSON FeatureCollection - 类型: str (JSON 字符串格式的 GeoJSON) - 格式: 必须符合 GeoJSON FeatureCollection 规范，包含两个 Polygon 特征 - 坐标系: WGS84 (经度在前，纬度在后) - 示例: '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[128, -26], [141, -26], [141, -21], [128, -21], [128, -26]]]}}, {"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[126, -28], [140, -28], [140, -20], [126, -20], [126, -28]]]}}]}'

Returns: str: JSON 字符串格式的差异 GeoJSON Feature - 类型: GeoJSON Feature with Polygon or MultiPolygon geometry - 格式: {"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [...]}} - 示例: '{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[128, -26], [141, -26], ...]]}}'

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 >>> featureCollection = '{"type": "FeatureCollection", "features": [{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[128, -26], [141, -26], [141, -21], [128, -21], [128, -26]]]}}, {"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[126, -28], [140, -28], [140, -20], [126, -20], [126, -28]]]}}]}' >>> result = asyncio.run(difference(featureCollection)) >>> print(result) '{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[128, -26], [141, -26], ...]]}}'

Notes: - 输入参数 featureCollection 必须是有效的 JSON 字符串 - 坐标顺序为 [经度, 纬度] (WGS84 坐标系) - 计算第一个多边形与第二个多边形的差异 - 返回第一个多边形中不在第二个多边形中的部分 - 依赖于 Turf.js 库和 Node.js 环境