Integrating geographical information in the Linked Digital Earth

Figures & data

Table 1. Characteristics of different geospatial Linked Data.

Provider	Provenance data	Triple store	Topic	Data-set	RDF generation	URI pattern	Vocabulary
Ordnance survey	Ordnance survey	Talis	Administrative units	A Gazetteer (1:50,000) and the administrative gazetteer for Great Britain	–	http://data.ordnancesurvey.co.uk/id/.+	Spatial Relations Ontology, Administ. Geography Ontology, WGS84 Geo Positioning, FOAF, OWL, and Gazetteer Ontology
Linked GeoData	OpenStreet Map	Virtuoso	Points-of-interest	OpenStreetMap database (post offices, traffic lights, bus stops)	Triplify and own mapping framework	http://linkedgeodata.org/triplify/+	LGD ontology, WGS84 Geo Positioning
GeoNames	GeoNames	RDF dump	Toponyms	Datasources used by GeoNames	–	http://sws.geonames.org/id/	GeoNames Ontology, WGS84 Geo Positioning
DBpedia	Wikipedia	Virtuoso	General knowledge	Wikipedia	DBpedia extraction framework	http://dbpedia.org/resource/+	DBpedia ontology, WGS84 Geo Positioning

Figure 1. Process for generating, integrating and publishing geospatial Linked Data.

Table 2. Pattern used for models (ontologies).

URI pattern	http://{sector}.linkeddata.es/ontology/{concept or property}
Resource class	Example
Stream	http://geo.linkeddata.es/ontology/Arroyo
Weather station	http://aemet.linkeddata.es/ontology/WeatherStation
Is part of	http://geo.linkeddata.es/ontology/formaParteDe

Table 3. Pattern used for resources (instances).

URI pattern	http://{sector}.linkeddata.es/[{dataset}]/resource/{type}/{name∣observation∣geometry}
Resource class	Example
Province	http://geo.linkeddata.es/resource/Provincia/Madrid
Municipality	http://geo.linkeddata.es/NGCE/resource/Municipio/Madrid
Weather station	http://aemet.linkeddata.es/resource/WeatherStation/id08150
Meteorological observation on precipitation in station 08222 at a given time point
Geometry	http://geo.linkeddata.es/BCN200/resource/Geometry/024864d837cd68078b1257cf815dc8035c727d8b

Figure 2. A detailed view of the ontology network.

Figure 3. Visualization of geographical Linked Data.