ST_pointAtTime
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Returns the spatial point on a trajectory at the specified timestamp.
Syntax
geometry ST_pointAtTime(trajectory traj, timestamp t);Parameters
| Parameter | Type | Description |
|---|---|---|
| traj | trajectory | The trajectory object. |
| t | timestamp | The timestamp at which to sample the trajectory. |
Return value
Returns a geometry value representing the spatial point on the trajectory at time t.
Examples
SELECT ST_pointAtTime(traj, '2010-1-11 23:40:00') FROM traj_table;该文章对您有帮助吗？