helper_multiPolygon
Create GeoJSON MultiPolygon features from coordinate arrays to represent complex geographic areas with multiple polygons for spatial analysis and mapping applications.
Instructions
创建多多边形特征对象。
此功能根据多组多边形坐标数组创建多多边形特征,用于表示包含多个多边形的复杂区域要素。
Args: coordinates: 多多边形坐标数组 - 类型: str (JSON 字符串格式的数组) - 格式: [[[[lng1, lat1], [lng2, lat2], ...]], [[[lng3, lat3], [lng4, lat4], ...]]] - 示例: '[[[[[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]]]], [[[[10, 0], [10, 5], [15, 5], [15, 0], [10, 0]]]]]'
Returns: str: JSON 字符串格式的 GeoJSON MultiPolygon Feature - 类型: GeoJSON Feature with MultiPolygon geometry - 格式: {"type": "Feature", "geometry": {"type": "MultiPolygon", "coordinates": [...]}, "properties": {...}} - 示例: '{"type": "Feature", "geometry": {"type": "MultiPolygon", "coordinates": [[[[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]]], [[[10, 0], [10, 5], [15, 5], [15, 0], [10, 0]]]]}, "properties": {"name": "multi 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 = '[[[[[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]]]], [[[[10, 0], [10, 5], [15, 5], [15, 0], [10, 0]]]]]' >>> properties = '{"name": "multi area"}' >>> result = asyncio.run(multiPolygon(coordinates, properties)) >>> print(result) '{"type": "Feature", "geometry": {"type": "MultiPolygon", "coordinates": [...]}, "properties": {"name": "multi 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) - 多多边形特征包含多个独立的多边形 - 每个多边形必须形成闭合环 - 依赖于 Turf.js 库和 Node.js 环境
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| coordinates | Yes | ||
| options | No | ||
| properties | No |