longitude

CURIE: gmeow:longitude
IRI: https://blackcatinformatics.ca/gmeow/longitude
Category: property
Defined by: gmeow:slices/places
Box roles: RBox role (What is this?)

The longitude of a geographic point in decimal degrees.

Structure

Property shape: datatype property; gmeow:GeoCoordinates -> xsd:decimal

Practical Pattern

Use gmeow:longitude from gmeow:GeoCoordinates to xsd:decimal when the relationship itself belongs in the native GMEOW graph.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Located Place

Source: slices/core/places/examples/located-place.ttl
Examples catalog: open in catalog#example-slices-core-places-examples-located-place

ex:edmontonCoords a gmeow:GeoCoordinates ;
    gmeow:latitude "53.5461"^^xsd:decimal ;
    gmeow:longitude "-113.4938"^^xsd:decimal .

ex:officeCoords a gmeow:GeoCoordinates ;
    gmeow:latitude "53.5443"^^xsd:decimal ;
    gmeow:longitude "-113.4909"^^xsd:decimal ;
    gmeow:elevation "645.0"^^xsd:decimal .

Common Companion Terms

gmeow:GeoCoordinates

Projects To

Profile	External Targets
`foaf`	`rdf`, `wgs84`
`geosparql`	`geo`, `rdf`
`schema-org`	`rdf`, `schema`
`vcard`	`rdf`, `vcard`

External Equivalences

Equivalent or closely aligned targets: schema, wgs84

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences

Source	Kind	Profile	Predicate/Relation	Target	Evidence
`gmeow:longitude`	equivalence	`-`	owl:equivalentProperty	schema:longitude	`gmeow-properties.sssom.tsv`; `gmeow:eqProperties029`; confidence 1
`gmeow:longitude`	equivalence	`-`	skos:closeMatch	wgs84:long	`gmeow-places.sssom.tsv`; `gmeow:eqPlaces024`; confidence 0.9

Projection Coverage

Source	Kind	Profile	Predicate/Relation	Target	Evidence
`gmeow:longitude`	projection	`foaf`	projects to / <=	rdf:type, wgs84:SpatialThing, wgs84:lat, wgs84:long	`gmeow:mapFoafSpatialThing`; lossy: address structure, place types, hierarchy, geometry/WKT
`gmeow:longitude`	projection	`geosparql`	projects to / <=	geo:Geometry, geo:asWKT, geo:hasGeometry, rdf:type	`gmeow:mapGeoCoordinateObservation`; lossy: the CoordinateObservation relator (vantage, confidence, reference frame, temporal scope) is dropped; only the WKT point survives; transform `gmeow:fnLatLongToWktPoint`
`gmeow:longitude`	projection	`geosparql`	projects to / <=	geo:Geometry, geo:asWKT, geo:hasGeometry, rdf:type	`gmeow:mapGeoPoint`; transform `gmeow:fnLatLongToWktPoint`
`gmeow:longitude`	projection	`geosparql`	projects to / <=	geo:Geometry, geo:asWKT, geo:hasGeometry, rdf:type	`gmeow:mapGeoPointCoarsened`; lossy: precise coordinates coarsened to the enclosing region at `gmeow:coarsenTo` level (privacy generalization, P10); transform `gmeow:fnCoarsenToGranularity`
`gmeow:longitude`	projection	`geosparql`	projects to / <=	geo:Geometry, geo:asWKT, geo:hasGeometry, rdf:type	`gmeow:mapGeoPosePoint`; lossy: orientation component dropped; GeoSPARQL 1.0/1.1 has no pose model; transform `gmeow:fnPosePositionToWktPoint`
`gmeow:longitude`	projection	`schema-org`	projects to / <=	rdf:type, schema:GeoCoordinates, schema:elevation, schema:geo, schema:latitude, schema:longitude	`gmeow:mapSchemaCoordinateObservation`; lossy: the CoordinateObservation relator (vantage, confidence, reference frame, temporal scope) collapses to a flat schema:geo edge; non-displayable/superseded observations are suppressed
`gmeow:longitude`	projection	`schema-org`	projects to / <=	rdf:type, schema:GeoCoordinates, schema:elevation, schema:geo, schema:latitude, schema:longitude	`gmeow:mapSchemaPlaceCoords`
`gmeow:longitude`	projection	`schema-org`	projects to / <=	rdf:type, schema:GeoCoordinates, schema:geo, schema:latitude, schema:longitude	`gmeow:mapSchemaPlaceCoordsCoarsened`; lossy: precise coordinates coarsened to the enclosing region at `gmeow:coarsenTo` level (privacy generalization, P10)
`gmeow:longitude`	projection	`vcard`	projects to / <=	rdf:type, vcard:Geo, vcard:hasGeo, vcard:latitude, vcard:longitude	`gmeow:mapVcardGeo`; confidence 0.9; lossy: elevation is dropped; the coordinate reference frame (WGS84) is implicit in the geo: URI; transform `gmeow:fnLatLongToGeoUri`

Usage Advice

Use when

Use for the longitude of a GeoCoordinates point in decimal degrees.

Avoid when

Avoid on anything but a GeoCoordinates value and avoid for celestial right ascension (use gmeow:rightAscension).

How to use

Pair gmeow:longitude with gmeow:latitude on the same GeoCoordinates; precise values are coarsenGuarded upstream.

Examples

ex:pt gmeow:longitude -3.19.

Use For Consumers

Avoid For Consumers

gmeow:consumerPublicSite

Published Alignment Graph

Alignments

Relation	Target
`closeMatch`	`wgs84:long`
`equivalentProperty`	`schema:longitude`