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Published byHunter Wells Modified over 2 years ago

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Ordnance Survey & Ontologies Dr John Goodwin

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Ordnance Survey and Linked Data

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disconnected (DC) externally connected (EC) equal (EQ) partially overlapping (PO) tangential proper part (TPP) tangential proper part inverse (TPPi) non-tangential proper part (NTPP) non-tangential proper part inverse (NTPPi) a b PO(a,b) a b EC(a,b) a b EQ(a,b) a b DC(a,b) a b TPP(a,b) b a TPPi(a,b) a b NTPP(a,b) b a NTPPi(a,b) Region Connection Calculus

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Spatial Relations DCDisjoint EC Touches EQ Equal PO Partial overlaps TPP Within TPPi Contains NTPP Within NTPPi Contains

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Semantics in OWL Spatial RelationsCharacteristics disjointsymmetric touchessymmetric partiallyOverlapssymmetric equalssymmetric, transitive, reflexive containstransitive withintransitive property Ο equals → property equals Ο property → property within Ο disjoint → disjoint disjoint Ο contains → disjoint partiallyOverlaps Ο within → overlaps contains Ο touches → connected Etc…

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Administrative Geography ObjectProperty: inCounty SubPropertyOf: within Characteristics: Functional Range: County or GreaterLondonAuthority ObjectProperty: ward SubPropertyOf: contains SubPropertyChain: district o ward Range: UnitaryAuthorityElectoralDivision or Ward

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Class: District SubClassOf: CivilAdministrativeArea, ward some DistrictWard, inCounty exactly 1 County

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Geometry Should complex geometries, e.g. Polygons etc. be stored in the graph? Feature Geometry PolygonLine Point extent asGML XML Literal

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