A trajectory is given by a collection of fixes, representing time-stamped locations. Non-spatiotemporal information specific to a fix can be included by assigning it some attributes, for example, to indicate that the fix is the arrival to some port stop. The ordering of the fixes is based on their temporal information, although such an ordering is not axiomatized in this pattern. Between two consecutive fixes, we can define a segment, which is traversed by some moving object. There is no requirement forcing that all segments in the trajectory can only be traversed by the same moving object.
In this model, it is assumed that the data provides the fixes in some linear sequence, which is motivated by real scenarios whereby indeed only properties of fixes will often be known, in particular their locations, and temporal extension, whether they are at ports, whether they are arrival or departure fixes from ports, and in which sequence the fixes occurred. This pattern instantiates the segments from the fixes. The traversing vessel will usually also be known. However, those segments to which the trajectory pattern attaches information about the vessel are usually not explicitly represented in the data.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Attribute
IRI: http://schema.geolink.org/1.0/pattern/trajectory#EndingFix
An instance of EndingFix represents the final fix in the specification of a trajectory
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Fix
A fix represents a spatiotemporal point in the specification of a trajectory. A fix has a location and a time stamp, and always belongs to one particular trajectory. Also, a fix cannot be followed by more than one other fix, and cannot follow itself. This gives a linear structure in the ordering of the fixes.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#MovingObject
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Position
Represents a geospatial location associated with a fix in the trajectory of a cruise. A position is understood as a point in either 2D or 3D space.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Segment
A segment starts from exactly one fix, and for every fix with a successor fix, there is a segment that starts from it. If a fix belongs to a trajectory and there is a segment that starts from this fix, then the segment belongs to the trajectory. Furthermore, if a segment starts from a fix, then it ends at the successor of the fix.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Source
IRI: http://schema.geolink.org/1.0/pattern/trajectory#StartingFix
An instance of StartingFix represents the first fix in a specification of a trajectory. A trajectory is linked to at least two consecutive fixes where the first fix is the starting fix.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#Trajectory
This class serves as the main access point of the pattern.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#atTime
Provides temporal information of a fix.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#endsAtFix
Provides the fix where the segment ends.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasAttribute
Provides an attribute of a fix or a segment.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasDataSource
Provides the source (e.g., a sensor, a device, etc.) from which information about the fix was obtained.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasFix
Provides a fix for the trajectory.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasNextFix
Provides the next fix after this fix in the sequence.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasPosition
Provides a geographical location of a fix.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#hasSegment
Provides a segment of the trajectory.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#startsFromFix
Provides the fix from which the segment starts.
IRI: http://schema.geolink.org/1.0/pattern/trajectory#traversedBy
Provides a moving object that traverses the segment.
hasAttributeop some Attributec is subclass of
hasNextFixop some Fixc is subclass of
inverse startsFromFixop some Segmentc
Attributec, Fixc, MovingObjectc, Positionc, Segmentc, Sourcec, Trajectoryc, temporal entity
This HTML document was obtained by processing the OWL ontology source code through LODE, Live OWL Documentation Environment, developed by Silvio Peroni.
Represents all kinds of attributes of a fix or a segment in a trajectory.