longitude

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geo
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos# (Visit page)

dc:title

WGS84 Geo Positioning: an RDF vocabulary

dc:description

A vocabulary for representing latitude, longitude and

altitude information in the WGS84 geodetic reference datum.

Version $Id: wgs84_pos.rdf,v 1.22 2009/04/20 15:00:30 timbl Exp $. See http://www.w3.org/2003/01/geo/ for more details.

dc:date

$Date: 2009/04/20 15:00:30 $

rdfs:label

geo

rdfs:comment

Recent changes to this namespace:

$Log: wgs84_pos.rdf,v $

Revision 1.22 2009/04/20 15:00:30 timbl

Remove the time bits which have been deal with elsewhere eg in iCal.

Revision 1.21 2009/04/20 12:52:47 timbl

try again

Revision 1.20 2009/04/20 12:42:11 timbl

Add Event (edited ages ago and never checked in), and location (following discussion http://chatlogs.planetrdf.com/swig/2009-04-20#T12-36-09)

Revision 1.19 2009/04/20 12:36:31 timbl

Add Event (edited ages ago and never checked in), and location (following discussion http://chatlogs.planetrdf.com/swig/2009-04-20#T12-36-09)

Revision 1.18 2006/02/01 22:01:04 danbri

Clarified that lat and long are decimal degrees, and that alt is decimal metres about local reference ellipsoid

Revision 1.17 2004/02/06 17:38:12 danbri

Fixed a bad commit screwup

Revision 1.15 2003/04/19 11:24:08 danbri

Fixed the typo even more.

Revision 1.14 2003/04/19 11:16:56 danbri

fixed a typo

Revision 1.13 2003/02/19 22:27:27 connolly

relaxed domain constraints on lat/long/alt from Point to SpatialThing

Revision 1.12 2003/01/12 01:41:41 danbri

Trying local copy of XSLT doc.

Revision 1.11 2003/01/12 01:20:18 danbri

added a link to morten's xslt rdfs viewer.

Revision 1.10 2003/01/11 18:56:49 danbri

Removed datatype range from lat and long properties, since they would

have required each occurance of the property to mention the datatype.

Revision 1.9 2003/01/11 11:41:31 danbri

Another typo; repaired rdfs:Property to rdf:Property x4

Revision 1.8 2003/01/11 11:05:02 danbri

Added an rdfs:range for each lat/long/alt property,

http://www.w3.org/2001/XMLSchema#float

Revision 1.7 2003/01/10 20:25:16 danbri

Longer rdfs:comment for Point, trying to be Earth-centric and neutral about

coordinate system(s) at the same time. Feedback welcomed.

Revision 1.6 2003/01/10 20:18:30 danbri

Added CVS log comments into the RDF/XML as an rdfs:comment property of the

vocabulary. Note that this is not common practice (but seems both harmless

and potentially useful).

revision 1.5

date: 2003/01/10 20:14:31; author: danbri; state: Exp; lines: +16 -5

Updated schema:

Added a dc:date, added url for more info. Changed the rdfs:label of the

namespace from gp to geo. Added a class Point, set as the rdfs:domain of

each property. Added XML comment on the lat_long property suggesting that

we might not need it (based on #rdfig commentary from implementors).

revision 1.4

date: 2003/01/10 20:01:07; author: danbri; state: Exp; lines: +6 -5

Fixed typo; several rdfs:about attributes are now rdf:about. Thanks to MortenF in

#rdfig for catching this error.

revision 1.3

date: 2003/01/10 11:59:03; author: danbri; state: Exp; lines: +4 -3

fixed buglet in vocab, added more wgs links

revision 1.2

date: 2003/01/10 11:01:11; author: danbri; state: Exp; lines: +4 -4

Removed alt from the as-a-flat-string property, and switched from

space separated to comma separated.

revision 1.1

date: 2003/01/10 10:53:23; author: danbri; state: Exp;

basic geo vocab

SpatialThing
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing (Visit page)

Type rdfs:Class
rdfs:label

SpatialThing

rdfs:comment

Anything with spatial extent, i.e. size, shape, or position.

e.g. people, places, bowling balls, as well as abstract areas like cubes.

point
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#Point (Visit page)

Type rdfs:Class
rdfs:subClassOf geo:SpatialThing
rdfs:label

point

rdfs:comment

A point, typically described using a coordinate system relative to Earth, such as WGS84.

Uniquely identified by lat/long/alt. i.e.

spaciallyIntersects(P1, P2) :- lat(P1, LAT), long(P1, LONG), alt(P1, ALT),

lat(P2, LAT), long(P2, LONG), alt(P2, ALT).

sameThing(P1, P2) :- type(P1, Point), type(P2, Point), spaciallyIntersects(P1, P2).

latitude
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#lat (Visit page)

Type Property
rdfs:domain geo:SpatialThing
rdfs:label

latitude

rdfs:comment

The WGS84 latitude of a SpatialThing (decimal degrees).

location
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#location (Visit page)

Type Property
rdfs:range geo:SpatialThing
rdfs:label

location

rdfs:subPropertyOf foaf:based_near
rdfs:comment

The relation between something and the point,

or other geometrical thing in space, where it is. For example, the realtionship between

a radio tower and a Point with a given lat and long.

Or a relationship between a park and its outline as a closed arc of points, or a road and

its location as a arc (a sequence of points).

Clearly in practice there will be limit to the accuracy of any such statement, but one would expect

an accuracy appropriate for the size of the object and uses such as mapping .

longitude
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#long (Visit page)

Type Property
rdfs:domain geo:SpatialThing
rdfs:label

longitude

rdfs:comment

The WGS84 longitude of a SpatialThing (decimal degrees).

altitude
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#alt (Visit page)

Type Property
rdfs:domain geo:SpatialThing
rdfs:label

altitude

rdfs:comment

The WGS84 altitude of a SpatialThing (decimal meters

above the local reference ellipsoid).

lat/long
Property Value
Universal identifier

http://www.w3.org/2003/01/geo/wgs84_pos#lat_long (Visit page)

Type Property
rdfs:label

lat/long

rdfs:comment

A comma-separated representation of a latitude, longitude coordinate.