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Digital Maps: Geographic Web Services Reunión Otoño 2003 Mesa Ciencias de la Tierra

Digital Maps: Geographic Web Services Reunión Otoño 2003 Mesa Ciencias de la Tierra 3 de octubre 2003. Intenet 2 and Geographic Applications. Internet 2 as a communication channel Geographic data: big volume of data Digital Maps Construction for a specific domain Collections in servers

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Digital Maps: Geographic Web Services Reunión Otoño 2003 Mesa Ciencias de la Tierra

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  1. Digital Maps: Geographic Web Services Reunión Otoño 2003 Mesa Ciencias de la Tierra 3 de octubre 2003

  2. Intenet 2 and Geographic Applications • Internet 2 as a communication channel • Geographic data: big volume of data • Digital Maps Construction for a specific domain • Collections in servers • Services to access collections

  3. GISUDLA Project Goals • Digital Map Collection Construction for a specific domain and the Services needed to access • Use of standards: OpenGIS • Data Volume reduction to improve the use of the channel

  4. OpenGIS: general hierarchy

  5. Road description: an example

  6. Information Community #2 Information Community #1 Type/Schema Registry Other Registries Service Registry Other Registries Service Registry Web Service Web Service Web Service Web Services Type/Schema Registry

  7. What is GML ? GML or Geography Markup Language is an XML based encoding standard for geographic information www.opengis.net/gml/02-069/GML2-12.html

  8. GML and GISELA Geo database GML GML DBF SHP XSLT VRML HTML X3D XSLT SVG

  9. WFS WFS GML WFS WFS WFS WFS WFS: general scheme Geo-data B Geo-data A GML => Geo-Web Geo-data C

  10. Compression Engine One end of the wire Small over the wire GML data The other end of the wire De-Compression Engine GML data But BIG again once we de-compress GML: a better binary GML data

  11. GISUDLA Project ESRI ArcSDE ESRI ArcIMS ESRI WFS Oracle Arc INFO XHTML SVG GML v.2.1.2 X3D .shp .dbf GML WFS OpenGIS MySQL Data Sources Web Services User Interface

  12. GML Schema of the Feature Department

  13. GML Code of the Feature Department

  14. GISUDLA Online

  15. Metadata Digital Layer Access

  16. Generating GMLv2.1.2

  17. Layer Visualization

  18. Final Remarks • Service construction • Use of standards: OpenGIS • Platform to add new functions • Application can be installed easily • Map visualization and user interaction should be improved with a wide bandwidth to have a good performance

  19. gisudla@mail.udlap.mx www.udlap.mx/~ gisudla Abraham López Ameneyro Antonio Razo Rodríguez David Sol Martínez Gerardo Cepeda Porras

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