types.trajectories.TrajectorySegment

types.trajectories.TrajectorySegment()

Segment of trajectory between two time points.

Extracted portion of full trajectory for analysis.

Attributes

Name	Type	Description
states	StateTrajectory	State trajectory segment
controls	Optional[ControlSequence]	Control sequence segment
time	TimePoints	Time points for segment
start_index	int	Index in original trajectory where segment starts
end_index	int	Index in original trajectory where segment ends

Examples

>>> def extract_segment(
...     result: SimulationResult,
...     t_start: float,
...     t_end: float
... ) -> TrajectorySegment:
...     '''Extract trajectory segment.'''
...     time = result['time']
...     mask = (time >= t_start) & (time <= t_end)
...     indices = np.where(mask)[0]
...
...     return TrajectorySegment(
...         states=result['states'][mask],
...         controls=result['controls'][mask[:-1]] if 'controls' in result else None,
...         time=time[mask],
...         start_index=indices[0],
...         end_index=indices[-1],
...     )
>>>
>>> # Extract transient response (first 2 seconds)
>>> segment: TrajectorySegment = extract_segment(result, 0.0, 2.0)
>>> transient_states = segment['states']