RCC8 Topological Functions

Metadata

IRI
http://www.opengis.net/def/function/rcc8
Definition

All of the RCC8 Topological Functions

Publisher

https://defs.opengis.net/org/ogc

Creator

https://defs.opengis.net/org/geosparql-swg

Created

2025-10-14

Modified

2026-01-19

License
Copyright Notice

(c) 2022 Open Geospatial Consortium

History Note

Defined since GeoSPARQL 1.0

Source

http://www.opengis.net/doc/geosparql/1.1

Concept Hierarchy

Concept Definitions

disconnected

IRI http://www.opengis.net/def/function/geosparql/rcc8dc
Definition A query function that returns true if the input geometries are disjoint. DE-9IM: FFTFFTTTT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

equals

IRI http://www.opengis.net/def/function/geosparql/rcc8eq
Definition A query function that returns true if the input geometries are equal. DE-9IM: TFFFTFFFT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

externally connected

IRI http://www.opengis.net/def/function/geosparql/rcc8ec
Definition A query function that returns true if the input geometries meet. DE-9IM: FFTFTTTTT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

non-tangential proper part

IRI http://www.opengis.net/def/function/geosparql/rcc8ntpp
Definition A query function that returns true if the first geometry argument is spatially inside the second geometry argument. DE-9IM: TFFTFFTTT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

non-tangential proper part inverse

IRI http://www.opengis.net/def/function/geosparql/rcc8ntppi
Definition A query function that returns true if the first geometry argument spatially contains the second geometry argument. DE-9IM: TTTFFTFFT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

partially overlapping

IRI http://www.opengis.net/def/function/geosparql/rcc8po
Definition A query function that returns true if the input geometries overlap. DE-9IM: TTTTTTTTT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

tangential proper part

IRI http://www.opengis.net/def/function/geosparql/rcc8tpp
Definition A query function that returns true if the first geometry argument is spatially covered by the second geometry argument. DE-9IM: TFFTTFTTT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

tangential proper part inverse

IRI http://www.opengis.net/def/function/geosparql/rcc8tppi
Definition A query function that returns true if the first geometry argument spatially covers the second geometry argument. DE-9IM: TTTFTTFFT
Is Defined By http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/rcc8-query-functions
Source http://www.opengis.net/doc/geosparql/1.1

Namespaces

cs
http://www.opengis.net/def/function/rcc8
dcterms
http://purl.org/dc/terms/
fno
https://w3id.org/function/ontology#
geo
http://www.opengis.net/ont/geosparql#
geof
http://www.opengis.net/def/function/geosparql/
ns1
http://www.opengis.net/spec/geosparql/1.1/req/geometry-topology-extension/
ns2
http://www.opengis.net/doc/geosparql/
owl
http://www.w3.org/2002/07/owl#
policy
http://www.opengis.net/def/metamodel/ogc-na/
rdf
http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs
http://www.w3.org/2000/01/rdf-schema#
schema
https://schema.org/
sd
http://www.w3.org/ns/sparql-service-description#
skos
http://www.w3.org/2004/02/skos/core#
status
http://www.opengis.net/def/status/
xsd
http://www.w3.org/2001/XMLSchema#

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