/Prototipo/Servlet/nbproject/private/retriever/www.w3.org/2003/01/geo/wgs84_pos.xml

  1<?xml version="1.0" encoding="UTF-8"?>
  2<?xml-stylesheet type="text/xsl" href="rdfs-xhtml.xsl"?>
  3
  4<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  5
  6<rdf:Description rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#">
  7 <dc:title>WGS84 Geo Positioning: an RDF vocabulary</dc:title>
  8 <dc:description>A vocabulary for representing latitude, longitude and 
  9 altitude information in the WGS84 geodetic reference datum. 
 10 Version $Id: wgs84_pos.rdf,v 1.22 2009/04/20 15:00:30 timbl Exp $. See http://www.w3.org/2003/01/geo/ for more details.</dc:description>
 11 <dc:date>$Date: 2009/04/20 15:00:30 $</dc:date>
 12 <rdfs:label>geo</rdfs:label>
 13
 14 <rdfs:comment>
 15Recent changes to this namespace:
 16$Log: wgs84_pos.rdf,v $
 17Revision 1.22  2009/04/20 15:00:30  timbl
 18Remove the time bits which have been deal with elsewhere eg in iCal.
 19
 20Revision 1.21  2009/04/20 12:52:47  timbl
 21try again
 22
 23Revision 1.20  2009/04/20 12:42:11  timbl
 24Add Event (edited ages ago and never checked in), and location (following discussion http://chatlogs.planetrdf.com/swig/2009-04-20#T12-36-09)
 25
 26Revision 1.19  2009/04/20 12:36:31  timbl
 27Add Event (edited ages ago and never checked in), and location (following discussion http://chatlogs.planetrdf.com/swig/2009-04-20#T12-36-09)
 28
 29Revision 1.18  2006/02/01 22:01:04  danbri
 30Clarified that lat and long are decimal degrees, and that alt is decimal metres about local reference ellipsoid
 31
 32Revision 1.17  2004/02/06 17:38:12  danbri
 33Fixed a bad commit screwup
 34
 35Revision 1.15  2003/04/19 11:24:08  danbri
 36Fixed the typo even more.
 37
 38Revision 1.14  2003/04/19 11:16:56  danbri
 39fixed a typo
 40
 41Revision 1.13  2003/02/19 22:27:27  connolly
 42relaxed domain constraints on lat/long/alt from Point to SpatialThing
 43
 44Revision 1.12  2003/01/12 01:41:41  danbri
 45Trying local copy of XSLT doc.
 46
 47Revision 1.11  2003/01/12 01:20:18  danbri
 48added a link to morten's xslt rdfs viewer.
 49
 50Revision 1.10  2003/01/11 18:56:49  danbri
 51Removed datatype range from lat and long properties, since they would
 52have required each occurance of the property to mention the datatype.
 53
 54Revision 1.9  2003/01/11 11:41:31  danbri
 55Another typo; repaired rdfs:Property to rdf:Property x4
 56
 57Revision 1.8  2003/01/11 11:05:02  danbri
 58Added an rdfs:range for each lat/long/alt property,
 59http://www.w3.org/2001/XMLSchema#float
 60
 61Revision 1.7  2003/01/10 20:25:16  danbri
 62Longer rdfs:comment for Point, trying to be Earth-centric and neutral about
 63coordinate system(s) at the same time. Feedback welcomed.
 64
 65Revision 1.6  2003/01/10 20:18:30  danbri
 66Added CVS log comments into the RDF/XML as an rdfs:comment property of the
 67vocabulary. Note that this is not common practice (but seems both harmless
 68and potentially useful).
 69
 70
 71revision 1.5
 72date: 2003/01/10 20:14:31;  author: danbri;  state: Exp;  lines: +16 -5
 73Updated schema:
 74Added a dc:date, added url for more info. Changed the rdfs:label of the
 75namespace from gp to geo. Added a class Point, set as the rdfs:domain of
 76each property. Added XML comment on the lat_long property suggesting that
 77we might not need it (based on #rdfig commentary from implementors).
 78
 79revision 1.4
 80date: 2003/01/10 20:01:07;  author: danbri;  state: Exp;  lines: +6 -5
 81Fixed typo; several rdfs:about attributes are now rdf:about. Thanks to MortenF in
 82#rdfig for catching this error.
 83
 84revision 1.3
 85date: 2003/01/10 11:59:03;  author: danbri;  state: Exp;  lines: +4 -3
 86fixed buglet in vocab, added more wgs links
 87
 88revision 1.2
 89date: 2003/01/10 11:01:11;  author: danbri;  state: Exp;  lines: +4 -4
 90Removed alt from the as-a-flat-string property, and switched from
 91space separated to comma separated.
 92
 93revision 1.1
 94date: 2003/01/10 10:53:23;  author: danbri;  state: Exp;
 95basic geo vocab
 96
 97</rdfs:comment>
 98
 99</rdf:Description>
100
101
102<rdfs:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing">
103 <rdfs:label>SpatialThing</rdfs:label>
104 <rdfs:comment>Anything with spatial extent, i.e. size, shape, or position.
105 e.g. people, places, bowling balls, as well as abstract areas like cubes.
106</rdfs:comment>
107</rdfs:Class>
108
109<!--
110<rdfs:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#TemporalThing">
111 <rdfs:label>temporal thing</rdfs:label>
112 <rdfs:comment>Anything with temporal extent, i.e. duration. e.g.
113  the taking of a photograph, a scheduled meeting, a GPS timestamped trackpoint.
114</rdfs:comment>
115</rdfs:Class>
116
117<rdfs:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#Event">
118  <rdfs:subClassOf rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#TemporalThing" />
119  <rdfs:label>event</rdfs:label>
120  <rdfs:comment>An event, with negligible duration but unique date-time.
121  Examples include a GPS timestamped trackpoint, the taking of a photograph,
122  and the sending of a message.
123  </rdfs:comment>
124</rdfs:Class>
125-->
126
127<rdfs:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#Point">
128  <rdfs:subClassOf rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing" />
129  <rdfs:label>point</rdfs:label>
130  <rdfs:comment>A point, typically described using a coordinate system relative to Earth, such as WGS84.
131  </rdfs:comment>
132  <rdfs:comment> 
133Uniquely identified by lat/long/alt. i.e.
134
135spaciallyIntersects(P1, P2) :- lat(P1, LAT), long(P1, LONG), alt(P1, ALT),
136  lat(P2, LAT), long(P2, LONG), alt(P2, ALT).
137
138sameThing(P1, P2) :- type(P1, Point), type(P2, Point), spaciallyIntersects(P1, P2).
139  </rdfs:comment>
140</rdfs:Class>
141
142
143<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#lat">
144 <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing" />
145 <rdfs:label>latitude</rdfs:label>
146 <rdfs:comment>The WGS84 latitude of a SpatialThing (decimal degrees).</rdfs:comment>
147</rdf:Property>
148
149<!--
150<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#time">
151 <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#TemporalThing" />
152 <rdfs:label>time</rdfs:label>
153 <rdfs:comment>The date time of an event, including fully qualified date,
154    and Z or offset from UTC.  XML Schema standard
155    date-time format.</rdfs:comment>
156</rdf:Property>
157-->
158
159<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#location">
160 <rdfs:range rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing" />
161 <rdfs:label>location</rdfs:label>
162 <rdfs:subPropertyOf rdf:resource="http://xmlns.com/foaf/0.1/based_near"/>
163 <rdfs:comment>The relation between something and the point, 
164 or other geometrical thing in space, where it is.  For example, the realtionship between
165 a radio tower and a Point with a given lat and long.
166 Or a relationship between a park and its outline as a closed arc of points, or a road and
167 its location as a arc (a sequence of points).
168 Clearly in practice there will be limit to the accuracy of any such statement, but one would expect
169 an accuracy appropriate for the size of the object and uses such as mapping .
170 </rdfs:comment>
171</rdf:Property>
172
173<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#long">
174 <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing" />
175 <rdfs:label>longitude</rdfs:label>
176 <rdfs:comment>The WGS84 longitude of a SpatialThing (decimal degrees).</rdfs:comment>
177</rdf:Property>
178
179<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#alt">
180 <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing" />
181 <rdfs:label>altitude</rdfs:label>
182 <rdfs:comment>The WGS84 altitude of a SpatialThing (decimal meters 
183above the local reference ellipsoid).</rdfs:comment>
184</rdf:Property>
185
186<!-- not sure we really need this -->
187<rdf:Property rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#lat_long">
188 <rdfs:label>lat/long</rdfs:label>
189 <rdfs:comment>A comma-separated representation of a latitude, longitude coordinate.</rdfs:comment>
190</rdf:Property>
191
192</rdf:RDF>