mappymatch.matchers.lcss.constructs#
Classes
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A cutting point represents where the LCSS algorithm cuts the trace into a sub-segment. |
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Represents a pairing of a trace and candidate path |
- class mappymatch.matchers.lcss.constructs.CuttingPoint(trace_index: signedinteger | int)[source]#
A cutting point represents where the LCSS algorithm cuts the trace into a sub-segment.
- Attributes:
trace_index: An index of where to cut the trace
- Parameters:
trace_index (signedinteger | int)
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trace_index:
Union
[signedinteger
,int
]# Alias for field number 0
- class mappymatch.matchers.lcss.constructs.TrajectorySegment(trace: Trace, path: List[Road], matches: List[Match] = [], score: float = 0, cutting_points: List[CuttingPoint] = [])[source]#
Represents a pairing of a trace and candidate path
- Attributes:
trace: The trace in the segment path: The candidate path in the segment matches: The matches between the trace and the path score: The similarity score between the trace and the path cutting_points: The points where the trace and path are to be cut
- Parameters:
trace (Trace)
path (List[Road])
matches (List[Match])
score (float)
cutting_points (List[CuttingPoint])
-
score:
float
# Alias for field number 3
-
cutting_points:
List
[CuttingPoint
]# Alias for field number 4
- set_score(score)[source]#
Sets the score of the trajectory segment
- Return type:
- Parameters:
score (float)
- Args:
score: The score of the trajectory segment
- Returns:
The updated trajectory segment
- set_cutting_points(cutting_points)[source]#
Sets the cutting points of the trajectory segment
- Return type:
- Args:
cutting_points: The cutting points of the trajectory segment
- Returns:
The updated trajectory segment
- set_matches(matches)[source]#
Sets the matches of the trajectory segment
- Return type:
- Args:
matches: The matches of the trajectory segment
- Returns:
The updated trajectory segment
- score_and_match(distance_epsilon, max_distance)[source]#
Computes the score of a trace, pair matching and also matches the coordinates to the nearest road.
- Return type:
- Parameters:
distance_epsilon (float)
max_distance (float)
- Args:
distance_epsilon: The distance threshold for matching max_distance: The maximum distance between the trace and the path
- Returns:
The updated trajectory segment with a score and matches
- compute_cutting_points(distance_epsilon, cutting_thresh, random_cuts)[source]#
- Return type:
- Parameters:
distance_epsilon (float)
cutting_thresh (float)
random_cuts (int)
- Computes the cutting points for a trajectory segment by:
computing the furthest point
adding points that are close to the distance epsilon
- Args:
distance_epsilon: The distance threshold for matching cutting_thresh: The threshold for cutting the trace random_cuts: The number of random cuts to add
- Returns:
The updated trajectory segment with cutting points