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Visualizing and Exploring Linked Spatiotemporal Data using Sextant

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Charalampos (Babis) Nikolaou

Presentation of the Sextant tool at the Linked Data Europe Workshop, co-located with the European Data Forum in Athens, Greece (21 March 2014)

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Visualizing and Exploring Linked Spatiotemporal Data using Sextant Linked Data Europe: Tools and Applications March 21st, 2014, Athens, Greece Konstantina Bereta, Kallirroi Dogani, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Manolis Koubarakis
DBpedia 2 Available on dbpedia.org/ as linked data
GeoNames 3 GeoNamesAvailable on as linked data
Open Street Map (OSM) Available on as linked data 4
CORINE Land Cover (CLC) Available on as linked data 5
Urban Atlas (UA) Available on as linked data 6
European Nomenclature of Territorial Units for Statistics (NUTS) 7 Available on GeoVocab.org as linked data
Global Administrative Areas (GADM) 8 Available on GeoVocab.org as linked data
Greek administrative geography (GAG) 9 Available on linkedopendata.gr as linked data
10 Where is the temporal dimension?
Time is everywhere 11 • Sensor data (e.g., wind direction) • Earth observation data (e.g., satellite acquisitions, EO standard products) • Simulations of events (e.g., fire spread, oil spill spread) • Evolution (e.g., land cover) • Marine surveillance • Census data (periodically)
The tool Sextant 12 Sextant is a web-based tool for: • visualizing and exploring linked spatiotemporal data • creating thematic maps by – by querying linked spatiotemporal data – geospatial data sources in OGC standard file formats (e.g., KML) • sharing and collaborative editing of thematic maps SPARQL stSPARQL GeoSPARQL Find more at: http://sextant.di.uoa.gr/ Interoperable with well-known GIS tools (e.g., ArcGIS, QGIS, Google Earth)
The architecture of Sextant 13
Map ontology 14
Rapid mapping Sextant in real-world applications 15 http://bit.ly/sextant-rapid-mapping-attica
Sextant in real-world applications 16 Evolution of land cover http://bit.ly/sextant-land-cover-evolution
Sextant in real-world applications 17 Simulation of fire spread SWeF S http://bit.ly/sextant-fire-front-monitor
Sextant in real-world applications 18 Semantic annotation of Earth Observation images CLC DLR UA negative examples for port areas http://bit.ly/sextant-venice-ports
Sextant is being extended 19  Map registry  Legend information  Production of statistical maps  Development of appropriate interfaces for mobile platforms  Query builder integration  Support of more file formats: ESRI shapefiles, JPEG JFIF, FITS, etc.
Thanks 20
Useful links 21 • Sextant http://sextant.di.uoa.gr/ • Strabon http://strabon.di.uoa.gr/ • LEO project http://linkedeodata.eu/ • TELEIOS project http://earthobservatory.eu/ • Linked EO data http://datahub.io/organization/teleios

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Visualizing and Exploring Linked Spatiotemporal Data using Sextant

  • 1. Visualizing and Exploring Linked Spatiotemporal Data using Sextant Linked Data Europe: Tools and Applications March 21st, 2014, Athens, Greece Konstantina Bereta, Kallirroi Dogani, George Garbis, Manos Karpathiotakis, Kostis Kyzirakos, Charalampos Nikolaou, Manolis Koubarakis
  • 4. Open Street Map (OSM) Available on as linked data 4
  • 5. CORINE Land Cover (CLC) Available on as linked data 5
  • 6. Urban Atlas (UA) Available on as linked data 6
  • 7. European Nomenclature of Territorial Units for Statistics (NUTS) 7 Available on GeoVocab.org as linked data
  • 8. Global Administrative Areas (GADM) 8 Available on GeoVocab.org as linked data
  • 9. Greek administrative geography (GAG) 9 Available on linkedopendata.gr as linked data
  • 10. 10 Where is the temporal dimension?
  • 11. Time is everywhere 11 • Sensor data (e.g., wind direction) • Earth observation data (e.g., satellite acquisitions, EO standard products) • Simulations of events (e.g., fire spread, oil spill spread) • Evolution (e.g., land cover) • Marine surveillance • Census data (periodically)
  • 12. The tool Sextant 12 Sextant is a web-based tool for: • visualizing and exploring linked spatiotemporal data • creating thematic maps by – by querying linked spatiotemporal data – geospatial data sources in OGC standard file formats (e.g., KML) • sharing and collaborative editing of thematic maps SPARQL stSPARQL GeoSPARQL Find more at: http://sextant.di.uoa.gr/ Interoperable with well-known GIS tools (e.g., ArcGIS, QGIS, Google Earth)
  • 13. The architecture of Sextant 13
  • 15. Rapid mapping Sextant in real-world applications 15 http://bit.ly/sextant-rapid-mapping-attica
  • 16. Sextant in real-world applications 16 Evolution of land cover http://bit.ly/sextant-land-cover-evolution
  • 17. Sextant in real-world applications 17 Simulation of fire spread SWeF S http://bit.ly/sextant-fire-front-monitor
  • 18. Sextant in real-world applications 18 Semantic annotation of Earth Observation images CLC DLR UA negative examples for port areas http://bit.ly/sextant-venice-ports
  • 19. Sextant is being extended 19  Map registry  Legend information  Production of statistical maps  Development of appropriate interfaces for mobile platforms  Query builder integration  Support of more file formats: ESRI shapefiles, JPEG JFIF, FITS, etc.
  • 21. Useful links 21 • Sextant http://sextant.di.uoa.gr/ • Strabon http://strabon.di.uoa.gr/ • LEO project http://linkedeodata.eu/ • TELEIOS project http://earthobservatory.eu/ • Linked EO data http://datahub.io/organization/teleios