注意：以下翻译的准确性尚未经过验证。这是使用 AIP ↗ 从原始英文文本进行的机器翻译。
支持于: 批处理, 流处理
将线串几何体转换为多边形几何体。此表达式假设线串几何体是闭合的。如果不是，表达式将返回null。
表达式类别: 地理空间
输出类型: Geometry
参数值:
polygon_points| polygon_points | 输出 |
|---|---|
| {"type":"LineString","coordinates":[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]} | {"type":"Polygon","coordinates":[[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]]} |
参数值:
polygon_points| polygon_points | 输出 |
|---|---|
| null | null |
| {"type":"LineString","coordinates":[[-77.49,38.01],[-77.19,38.14],[-77.49,38.01]]} | null |
| {"type":"LineString","coordinates":[[-77.49,38.01],[-77.19,38.14]]} | null |
| {"type":"LineString","coordinates":[[-77.49,38.01]]} | null |
| {"type":"Polygon","coordinates":[[[-77.49,38.01],[-77.47,38.15],[-77.19,38.14],[-77.49,38.01]]]} | null |