Visualizing and Exploring Linked
Spatiotemporal Data using Sextant
Linked Data Europe: Tools and Applications
March 21st, ...
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 stan...
The tool Sextant
12
Sextant is a web-based tool for:
• visualizing and exploring linked spatiotemporal
data
• creating the...
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
por...
Sextant is being extended
19
 Map registry
 Legend information
 Production of statistical maps
 Development of appropr...
Thanks
20
Useful links
21
• Sextant
http://sextant.di.uoa.gr/
• Strabon
http://strabon.di.uoa.gr/
• LEO project
http://linkedeodata....
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Visualizing and Exploring Linked Spatiotemporal Data using Sextant

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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

  1. 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
  2. 2. DBpedia 2 Available on dbpedia.org/ as linked data
  3. 3. GeoNames 3 GeoNamesAvailable on as linked data
  4. 4. Open Street Map (OSM) Available on as linked data 4
  5. 5. CORINE Land Cover (CLC) Available on as linked data 5
  6. 6. Urban Atlas (UA) Available on as linked data 6
  7. 7. European Nomenclature of Territorial Units for Statistics (NUTS) 7 Available on GeoVocab.org as linked data
  8. 8. Global Administrative Areas (GADM) 8 Available on GeoVocab.org as linked data
  9. 9. Greek administrative geography (GAG) 9 Available on linkedopendata.gr as linked data
  10. 10. 10 Where is the temporal dimension?
  11. 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. 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. 13. The architecture of Sextant 13
  14. 14. Map ontology 14
  15. 15. Rapid mapping Sextant in real-world applications 15 http://bit.ly/sextant-rapid-mapping-attica
  16. 16. Sextant in real-world applications 16 Evolution of land cover http://bit.ly/sextant-land-cover-evolution
  17. 17. Sextant in real-world applications 17 Simulation of fire spread SWeF S http://bit.ly/sextant-fire-front-monitor
  18. 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. 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.
  20. 20. Thanks 20
  21. 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

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