| trajectory point |
The spatio-temporal object that consists of the spatial location and attributes of
a moving object at a time point. The spatial location can be represented by 2D or
3D coordinates. The attributes support multiple fields of different types.
|
| trajectory object |
The high-dimensional object that consists of a series of trajectory points and events,
including time, space, attributes, and events.
|
| trajectory timeline |
The time value sequence of a trajectory object. |
| trajectory spatial |
The spatial geometry object of a trajectory object, which is of the linestring type. |
| trajectory leaf |
The spatial location of a moving object (which is a trajectory point) at a time point. |
| trajectory attributes |
The attributes of a moving object at different trajectory points, such as the velocity
and direction.
|
| trajectory attribute field |
The attribute field of a trajectory object, such as the velocity field. The number
of values of an attribute field is the same as the number of trajectory points.
|
| trajectory field value |
The value of a trajectory attribute field at a time point. |
| trajectory events |
The events that occur in a trajectory, such as refueling, breakdown, and car lock
events in the trajectory of a car. A trajectory event consists of the event type ID
and event time.
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