Returns the value of the acceleration attribute field at the specified time point.
Syntax
float8 ST_accelerationAtTime(trajectory traj, timestamp t);Parameters
| Parameter | Description |
|---|---|
traj |
The trajectory object. |
t |
The time point. |
Example
Select ST_accelerationAtTime(traj,'2010-1-11 23:40:00') From traj_table;该文章对您有帮助吗？