Integration of a Spatial Data
Infrastructure into an e-learning
environment
GI-Tage,
Münster
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06-27-2002
Ingo Simonis
Stephan Merten
Institute for Geoinformatics
University of Münster, Germany
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geoinformation.net
• BMBF (FMER) funded project
• 2 ½ years
• Ends 12/2003
• Partners
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• University Bonn
• University Karlsruhe
• University Munich (2x)
• University Potsdam
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www.geoinformation.net
• Goal: Development of a e-learning
environment
• e-learning modules• (all)
• geo-algorithms editor (Bonn)
• SDI-portal (Münster)
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Driving forces
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Encourage “active learning”
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Data availability for lectures
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Different formats, different CS
Spatial Data Infrastructure
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Mapping Services
WMS
WMS
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WCS
Oracle
ArcSDE
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Feature Services
GML
WFS
Geographic Markup
Language (GML
2.1)
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Oracle
ArcSDE
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Catalog Services
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Metadata for
services and data
FGDC/ISO
service chaining
service plug-andplay
Catalog/
WRS
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Oracle
ArcSDE
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Open GIS Consortium
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International consortium of well-known GIS-, OS-,
DBMS –providers, developers, and users
(ESRI, SICAD, SUN, MS, Oracle, Informix, etc.)
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Close cooperation with ISO
worldwide leadership at description of interoperable
GIS
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non profit, founded in 1994
Availability of spatial data through SDI
Approach: Interoperability of services based on interface
specifications
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Architecture Part 1
WMS
Registry
http
WFS
WCS
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(Spatial)-DB
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GI-Software at German Universities
• expertise on COTS rather than SCOTS
• based on ESRI educational programs
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Architecture Part 2
ArcPad
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ArcIMS
ArcExplorer
ArcGIS
ArcSDE
(Spatial)-DB
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GI-Software at German Universities
• expertise on COTS rather than SCOTS
• based on ESRI educational programs
• two phase development
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• COTS  working environment
• SCOTS  gaining experiences
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Architecture Part 3
WMS
Registry
ArcPad
ArcExplorer
http
WFS
WCS
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ArcIMS
ArcGIS
ArcSDE
(Spatial)-DB
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Academic vs. commercial SDI
• case study
• search for suitable data:
• meta data:
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SCOTS: ISO 19115 (core)
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COTS: FGDC / ISO
minimal capacities to pay attention on
automatic mapping required
leads to a simplified and adapted meta data
subset (based on ISO 19115)
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Academic vs. commercial SDI
• Catalog responses and needs in class
• Response: URI of a shape file
• Exploring capacities
• No standardized way to feed a shape file
to a WMS
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Academic vs. commercial SDI
• data access
• WFS: usability of GML encoded data
• Visualization aspects
• how to visualize arbitrary data?
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• WMS -SLD a first solution
• Map manipulation?
• SMS = discussion paper
•  follow every spec?
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Academic vs. commercial SDI
• data processing
• COTS: lots of processing functionality
• SCOTS?
•  web based GIS?
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Summary I
• Turnover rates at universities
• ArcIMS: 300+ pages manual
• Continuity necessary
• Financial aspects
• Commercial model conceivable:
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• Self-financing by participating universities
• Integration of new technologies
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Summary II
• Standardized infrastructures do not fulfill the
daily needs entirely
• COTS products still needed
• New services allow •integration of simulation
models into SDIs
• SDI main role: Data acquisition
• Things will change when more processing
capacity will be available as services
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Thank you!
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