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

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Presentation on theme: "Digital Maps: Geographic Web Services Reunión Otoño 2003 Mesa Ciencias de la Tierra 3 de octubre 2003."— Presentation transcript:

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

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

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

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

11 GISUDLA Project Arc INFO.shp.dbf GML GML v.2.1.2 XHTML SVG X3D OpenGIS MySQL Oracle WFS ESRI ArcSDE ESRI ArcIMS ESRI WFS Data SourcesWeb ServicesUser Interface

12 GML Schema of the Feature Department

13 GML Code of the Feature Department Departamento de Sistemas Abraham Ameneiro 1.0

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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