@prefix rdf: . @prefix rdfs: . @prefix xsd: . @prefix owl: . @prefix : . @prefix dcterms: . @prefix its-core: . @prefix schema: . @prefix skos: . @prefix vann: . @prefix geo: . @prefix cdm1: . :LocationCorePattern a owl:Ontology ; dcterms:title "ITS Location Referencing Core"@en ; skos:definition "Core abstractions for locations, location representations, and location collections used across multiple location-referencing methodologies."@en ; dcterms:creator "Kenneth Vaughn" ; dcterms:created "Draft" ; dcterms:modified "2026-04-29"^^xsd:date ; dcterms:license "http://creativecommons.org/licenses/by/4.0/" ; its-core:draft "true" ; owl:versionInfo "0.0.1" ; owl:versionIRI ; vann:preferredNamespacePrefix "its-location" ; vann:preferredNamespaceUri "https://w3id.org/itsdata/location/v1/" ; owl:imports its-core: . ################################################################# # Core classes ################################################################# :LocationThing a owl:Class ; skos:definition "Parent class for location domain concepts."@en . :SpatialObject a owl:Class ; rdfs:subClassOf :LocationThing ; rdfs:subClassOf geo:SpatialObject ; skos:definition "A spatial object within the ITS domain (subclass of geo:SpatialObject)."@en . :Feature a owl:Class ; rdfs:subClassOf :SpatialObject ; rdfs:subClassOf geo:Feature ; skos:definition "An abstraction of real-world phenomena. An ITS-domain feature (subclass of geo:Feature) used to model real-world things that have a spatial location."@en ; skos:note "Geographic features can be defined for any geographic entity that can be defined with geospatial boundaries, such as landmarks, buildings, transport infrastructure (e.g., road, pathway, railway, bridge structures, intersections, traffic signal cabinet, traffic signal pole, waterway), jurisdictional areas (e.g., country, city), etc."@en . :Geometry a owl:Class ; rdfs:subClassOf :SpatialObject ; rdfs:subClassOf geo:Geometry ; skos:definition "A description of a spatial location in the real world according to a defined reference system"@en . :CoordinateGeometry a owl:Class ; rdfs:subClassOf :Geometry ; skos:definition "A geometry that is represented by a coordinate system (i.e., directly encodes coordinate tuples)."@en . :CoordinateReferenceSystem a owl:Class ; rdfs:subClassOf :LocationThing ; skos:definition "A coordinate reference system (CRS) used to interpret coordinate tuples in a CoordinateGeometry. Typically identified using an OGC CRS IRI such as http://www.opengis.net/def/crs/EPSG/0/4326."@en . :Location a owl:Class ; rdfs:subClassOf :Feature ; skos:definition "A particular place or position."@en ; skos:note "A location is modelled as a feature, which is a spatial object with a name."@en ; skos:note "The term 'location' by itself is a broad term that can be used to reference spatial, computer memory, imaginary and other locations. Within the context of this ontology, it is used to reference physical locations within three-dimensional space."@en . :SpatialLocation a owl:Class ; rdfs:subClassOf :Feature ; rdfs:equivalentClass :Location ; skos:definition "A location that is represented in three-dimensional space."@en ; skos:note "The 'location' could be a point (consuming no space) or could consume space in one, two or three dimensions. In any case, the location is identified within a larger space."@en ; skos:note "Within ITS, locations are typically locations on or near the surface of the Earth."@en . :LocationGroup a owl:Class ; rdfs:subClassOf :Feature ; skos:definition "An unordered set of multiple physically separate locations."@en . :LocationCode a owl:Class ; rdfs:subClassOf :LocationThing ; rdfs:subClassOf its-core:Code ; skos:definition "A code that identifies (or can be used to look up) a location in some external referencing system."@en . ################################################################# # Core properties ################################################################# :LocationObjectProperty a owl:ObjectProperty ; skos:definition "Organizational super-property for location core object properties."@en . :LocationDataProperty a owl:DatatypeProperty ; skos:definition "Organizational super-property for location core data properties."@en . :hasMember a owl:ObjectProperty ; rdfs:subPropertyOf :LocationObjectProperty ; schema:domainIncludes :LocationGroup ; schema:rangeIncludes :SpatialObject ; skos:definition "Relates a location group to a member spatial object."@en . :hasPrimaryRepresentation a owl:ObjectProperty ; rdfs:subPropertyOf :LocationObjectProperty ; rdfs:subPropertyOf geo:hasGeometry ; schema:domainIncludes :Feature ; schema:rangeIncludes :Geometry ; skos:definition "Links a Location to its preferred (primary) representation node."@en . :hasAlternativeRepresentation a owl:ObjectProperty ; rdfs:subPropertyOf :LocationObjectProperty ; rdfs:subPropertyOf geo:hasGeometry ; schema:domainIncludes :Feature ; schema:rangeIncludes :Geometry ; skos:definition "Links a Location to an additional representation node intended to denote the same physical location."@en . :geometryOf a owl:ObjectProperty ; rdfs:subPropertyOf :LocationObjectProperty ; owl:inverseOf geo:hasGeometry ; schema:domainIncludes :Geometry ; schema:rangeIncludes :Feature ; skos:definition "Inverse of geo:hasGeometry: relates a geometry to the feature it represents."@en . :hasCRS a owl:ObjectProperty ; rdfs:subPropertyOf :LocationObjectProperty ; schema:domainIncludes :CoordinateGeometry ; schema:rangeIncludes :CoordinateReferenceSystem ; skos:definition "Associates a CoordinateGeometry with the coordinate reference system used to interpret its coordinate tuples."@en . :coordinateEpoch a owl:DatatypeProperty ; rdfs:subPropertyOf :LocationDataProperty ; schema:domainIncludes :CoordinateGeometry ; schema:rangeIncludes xsd:dateTime ; skos:definition "The epoch (observation/realization time) at which the coordinate tuples of a CoordinateGeometry are valid in its CRS. Needed for dynamic reference frames."@en .