misc_line_slice
Extract a segment from a line between two specified points using GeoJSON data. This tool finds the nearest positions on a line to given start and end points, then returns the sliced portion as a GeoJSON LineString.
Instructions
在线段上截取指定起点和终点之间的部分。
此功能在线段上找到与起点和终点最近的位置，并截取这两点之间的线段部分。
Args: start_point: 起点 GeoJSON Point 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": [-77.029609, 38.881946]}'
end_point: 终点 GeoJSON Point 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": [-77.021884, 38.889563]}'
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": [[-77.031669, 38.878605], [-77.029609, 38.881946], [-77.020339, 38.884084], [-77.025661, 38.885821], [-77.021884, 38.889563], [-77.019824, 38.892368]]}'Returns: str: JSON 字符串格式的 GeoJSON LineString 特征 - 类型: GeoJSON Feature with LineString geometry - 格式: {"type": "Feature", "geometry": {"type": "LineString", "coordinates": [...]}}
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 >>> start = '{"type": "Point", "coordinates": [-77.029609, 38.881946]}' >>> end = '{"type": "Point", "coordinates": [-77.021884, 38.889563]}' >>> line = '{"type": "LineString", "coordinates": [[-77.031669, 38.878605], [-77.029609, 38.881946], [-77.020339, 38.884084], [-77.025661, 38.885821], [-77.021884, 38.889563], [-77.019824, 38.892368]]}' >>> result = asyncio.run(line_slice(start, end, line)) >>> print(result) '{"type": "Feature", "geometry": {"type": "LineString", "coordinates": [[-77.029609, 38.881946], [-77.021884, 38.889563]]}}'
Notes: - 输入参数 start_point、end_point 和 line 必须是有效的 JSON 字符串 - 坐标顺序为 [经度, 纬度] (WGS84 坐标系) - 截取起点和终点之间的线段部分 - 依赖于 Turf.js 库和 Node.js 环境
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| start_point | Yes | ||
| end_point | Yes | ||
| line | Yes |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |