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es3154
by es3154

helper_polygon

Create GeoJSON polygon features from coordinate arrays to represent geographic areas, plots, and spatial regions with custom properties.

Instructions

创建多边形特征对象。

此功能根据坐标点数组创建多边形特征,用于表示区域、地块等面状地理要素。

Args: coordinates: 多边形坐标数组 - 类型: str (JSON 字符串格式的数组) - 格式: [[[lng1, lat1], [lng2, lat2], [lng3, lat3], [lng1, lat1]]] - 示例: '[[[125, -15], [113, -22], [154, -27], [144, -15], [125, -15]]]'

properties: 属性对象 - 类型: str (JSON 字符串) 或 None - 格式: 键值对对象 - 示例: '{"name": "area", "type": "park"}' options: 可选参数配置 - 类型: str (JSON 字符串) 或 None - 可选字段: - bbox: 边界框数组 [minX, minY, maxX, maxY] - id: 特征的标识符 - 示例: '{"bbox": [112, -28, 155, -14], "id": "polygon1"}'

Returns: str: JSON 字符串格式的 GeoJSON Polygon Feature - 类型: GeoJSON Feature with Polygon geometry - 格式: {"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [...]}, "properties": {...}} - 示例: '{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[125, -15], [113, -22], [154, -27], [144, -15], [125, -15]]]}, "properties": {"name": "area"}}'

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 >>> coordinates = '[[[125, -15], [113, -22], [154, -27], [144, -15], [125, -15]]]' >>> properties = '{"name": "area"}' >>> result = asyncio.run(polygon(coordinates, properties)) >>> print(result) '{"type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[125, -15], [113, -22], [154, -27], [144, -15], [125, -15]]]}, "properties": {"name": "area"}}'

Notes: - 输入参数 coordinates、properties 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) - 多边形必须形成闭合环,首尾坐标点必须相同 - 支持带孔的多边形(多个环) - 依赖于 Turf.js 库和 Node.js 环境

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
coordinatesYes
optionsNo
propertiesNo

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