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es3154
by es3154

measurement_centroid

Calculate the geometric center point of any GeoJSON object by averaging all vertex coordinates to determine the central location.

Instructions

计算几何对象的中心点。

此功能计算给定几何对象的几何中心,通过平均所有顶点坐标确定中心位置。

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]]]}'

options: 可选参数配置 - 类型: str (JSON 字符串) 或 None - 可选字段: - properties: 传递给几何中心的属性对象 - 示例: '{"properties": {"name": "centroid"}}'

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": "centroid"}}' >>> result = asyncio.run(centroid(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) - 几何中心是通过平均所有顶点坐标计算的中心点 - 依赖于 Turf.js 库和 Node.js 环境

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
geojsonYes
optionsNo

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