helper_point
Create GeoJSON point features from coordinates to represent geographic locations in geospatial analysis.
Instructions
创建点特征对象。
此功能根据坐标点创建点特征，用于表示具体的地理位置点。
Args: coordinates: 坐标点 - 类型: str (JSON 字符串格式的数组) - 格式: [lng, lat] - 示例: '[-75.343, 39.984]'
properties: 属性对象
- 类型: str (JSON 字符串) 或 None
- 格式: 键值对对象
- 示例: '{"name": "Location A", "type": "city"}'
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": [-75.5, 39.5, -75, 40], "id": "point1"}'Returns: str: JSON 字符串格式的 GeoJSON Point Feature - 类型: GeoJSON Feature with Point geometry - 格式: {"type": "Feature", "geometry": {"type": "Point", "coordinates": [lng, lat]}, "properties": {...}} - 示例: '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-75.343, 39.984]}, "properties": {"name": "Location A"}}'
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 = '[-75.343, 39.984]' >>> properties = '{"name": "Location A"}' >>> result = asyncio.run(point(coordinates, properties)) >>> print(result) '{"type": "Feature", "geometry": {"type": "Point", "coordinates": [-75.343, 39.984]}, "properties": {"name": "Location A"}}'
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) - 点特征是地理信息系统中最基本的要素类型 - 依赖于 Turf.js 库和 Node.js 环境
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| coordinates | Yes | ||
| properties | No | ||
| options | No |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |