This function returns the spatial point in a trajectory object that is nearest to the specified geometry object within the specified time range.
Syntax
geometry ST_nearestApproachPoint(trajectory traj, tsrange range, geometry g);
geometry ST_nearestApproachPoint(trajectory traj, timestamp t1, timestamp t2, geometry g);Parameters
| Parameter | Description |
|---|---|
| traj | The trajectory object. |
| t1 | The start time. |
| t2 | The end time. |
| range | The time range. |
| g | The specified geometry object. |
Example
Select ST_nearestApproachPoint(traj, '2010-1-1 13:00:00', '2010-1-1 14:00:00', 'LINESTRING(0 0, 5 5, 9 9)'::geometry) from traj_table;