ST_accelerationAtTime
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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？