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Turf-MCP

by es3154

measurement_pointToLineDistance

Calculate the shortest distance between a geographic point and line using WGS84 coordinates. Accepts GeoJSON Point and LineString inputs with configurable units and calculation methods.

Instructions

计算点到线的最短距离。

该函数使用 Turf.js 库的 pointToLineDistance 方法,计算点到线的最短距离。

Args: point: 点 GeoJSON 特征或几何图形 - 类型: str (JSON 字符串格式的 GeoJSON) - 格式: 必须符合 GeoJSON Point 规范 - 坐标系: WGS84 (经度在前,纬度在后) - 示例: '{"type": "Point", "coordinates": [-75.343, 39.984]}'

line: 线 GeoJSON 特征或几何图形 - 类型: str (JSON 字符串格式的 GeoJSON) - 格式: 必须符合 GeoJSON LineString 规范 - 坐标系: WGS84 (经度在前,纬度在后) - 示例: '{"type": "LineString", "coordinates": [[-74, 40], [-78, 42], [-82, 35]]}' options: 可选参数配置 - 类型: str (JSON 字符串) 或 None - 可选字段: - units: 距离单位 (默认: 'kilometers') - 有效值: 'miles', 'nauticalmiles', 'kilometers', 'meters', 'yards', 'feet', 'inches' - method: 计算方法 (默认: 'geodesic') - 有效值: 'geodesic', 'planar' - 示例: '{"units": "miles", "method": "geodesic"}'

Returns: str: JSON 字符串格式的距离结果对象 - 类型: 包含 value 和 units 的对象 - 格式: {"value": 距离数值, "units": "距离单位"} - 示例: '{"value": 12.34, "units": "miles"}'

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 >>> point = '{"type": "Point", "coordinates": [-75.343, 39.984]}' >>> line = '{"type": "LineString", "coordinates": [[-74, 40], [-78, 42], [-82, 35]]}' >>> options = '{"units": "miles", "method": "geodesic"}' >>> result = asyncio.run(pointToLineDistance(point, line, options)) >>> print(result) '12.34'

Notes: - 输入参数 point、line 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) - 计算的是点到线的最短球面距离 - 依赖于 Turf.js 库和 Node.js 环境

Input Schema

NameRequiredDescriptionDefault
lineYes
optionsNo
pointYes

Input Schema (JSON Schema)

{ "properties": { "line": { "type": "string" }, "options": { "anyOf": [ { "type": "string" }, { "type": "null" } ], "default": null }, "point": { "type": "string" } }, "required": [ "point", "line" ], "type": "object" }

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