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;