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Turf-MCP

by es3154

coordinate_mutation_truncate

Reduce coordinate precision in GeoJSON geometries and optionally remove Z values using Turf.js truncate method for cleaner spatial data.

Instructions

截断 GeoJSON 几何图形的坐标精度。

该函数使用 Turf.js 库的 truncate 方法,减少 GeoJSON 几何图形坐标的小数精度, 并可选择移除 Z 坐标值。

Args: geojson: GeoJSON 特征或几何图形 - 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": "Point", "coordinates": [70.46923055566859, 58.11088890802906, 1508]}'

options: 可选参数配置 - 类型: str (JSON 字符串) 或 None - 可选字段: - precision: 坐标小数精度 (默认: 6) - coordinates: 最大坐标维度数 (主要用于移除 Z 坐标) (默认: 3) - mutate: 是否允许修改输入 GeoJSON (默认: false) - 示例: '{"precision": 3, "coordinates": 2, "mutate": false}'

Returns: str: JSON 字符串格式的精度截断后的 GeoJSON 特征 - 类型: GeoJSON Feature - 格式: 坐标精度截断后的 GeoJSON - 示例: '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [70.469, 58.111]}}'

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": [70.46923055566859, 58.11088890802906, 1508]}' >>> options = '{"precision": 3, "coordinates": 2}' >>> result = asyncio.run(truncate(point, options)) >>> print(result) '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [70.469, 58.111]}}'

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) - 通过设置 coordinates 为 2 可以移除 Z 坐标值 - 依赖于 Turf.js 库和 Node.js 环境

Input Schema

NameRequiredDescriptionDefault
geojsonYes
optionsNo

Input Schema (JSON Schema)

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

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