This function returns the cumulative distance of movement from the start point to the spatial point arrived at the specified time point.
Syntax
float8 ST_cumulativeDistanceAtTime(trajectory traj, timestamp t)
;Parameters
| Parameter | Description |
|---|---|
| traj | The trajectory object. |
| t | The time point. |
Examples
Select ST_cumulativeDistanceAtTime(traj, '2011-11-1 04:30:00') from traj_table;