geoportal of wallonia : discover geographic data in wallonia
TRANSCRIPT
The Geoportal of Wallonia : come in and discover geographic data of Wallonia
Vincent Bombaerts – Public Service of Wallonia
Open Belgium 2015 Conference - 23d of February 2015 - Palais des Congrès, Namur
Imagine… a spatial data infrastructure
SDI
Spatial data
Metadata
Web services
Agreements on data sharing
Coordination
This is reality !
• in Europe : INSPIRE – Directive 2007/2/EC establishing an Infrastructure for Spatial Information in the European Community - http://inspire.ec.europa.eu/
• in Wallonia - InfraSIG - 2010/12/22 Decree on Walloon infrastructure for spatial information
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http://geoportail.wallonie.be
The Geoportal of Wallonia : come in and discover geographic data
• Introduction
• Enhance geographic data discoverability through a standardised metadata catalogue
• Focus on the main options for accessing geographic data through the Geoportal of Wallonia
• Conclusion
Geographic metadata standards
• As soon as you want to exchange information, there is a need to agree
– on a common understanding of the meaning of the information (the semantics) ISO 19115-1 (ISO
19115)
– on a common way to encode this information ISO
19115-3 (ISO 19139)
– on a common communication language to exchange this information with others via a webservice OGC
Catalog Service for the Web
• Define a profile for specific purpose
– INSPIRE Profile of ISO 19115
– INSPIRE Profile of CSW
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Metawal : Catalog for geospatial information in Wallonia
• The official metadata catalog and one of the basic component of InfraSIG , the Walloon SDI
– Whoever wants to enter InfraSIG as a producer must document its data in Metawal
• Based on GeoNetwork Opensource
http://geonetwork-opensource.org/
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http://metawal.wallonie.be
Metawal : Catalog for geospatial information in Wallonia
CSW
http://metawal.wallonie.be/geonetwork/srv/fre/csw
The Geoportal of Wallonia : come in and discover geographic data
• Introduction
• Enhance geographic data discoverability through a standardised metadata catalogue
• Focus on the main options for accessing geographic data through the Geoportal of Wallonia
• Conclusion
The geoportal of Wallonia : a quick overview
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http://geoportail.wallonie.be
Find the data
View the data
Staticinformation
Dynamicinformation
Find metadata on the Geoportal of Wallonia
1. Open the Geocatalogue
2. Enter a keyword
Your search
The Results
Find metadata on the Geoportal of Wallonia
1. Open the Geocatalogue
2. Enter a keyword
3. Open the description sheet
Find access metadata
1. Open the Geocatalogue
2. Enter a keyword
3. Open the description sheet
4. “Access” tab gives information on– Viewing application that show the data
– Web services serving the data
– How to obtain a copy of the data
– Conditions for accessing and using the data
– How to contact the distributor
What are the main distribution options ?
1. Use the dedicated viewer/application
• Made by people having a deep knowledge of the data
– Presents data that are made to be used together
– Prevents misuse of the data by zoom limitation, warnings and other mechanisms
– Always up-to-date
• Unless secured freely available for everybody
• Accessible under the terms of a licence -http://geoportail.wallonie.be/files/LicApplicationsSPW.pdf
– No overuse is permitted
– Screenshot permitted with mention
– Non-liability principle
– No guarantee on the service provided
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2. Use a web service
• Dynamic access to the data
– Always up-to-date
– Zoom limitations may exist to prevent misinterpretation
• Various protocols : REST Geoservices, WM(T)S, KML
• Unless secured freely available for everybody
• Accessible under the terms of a licence -http://geoportail.wallonie.be/files/LicServicesSPW.pdf
– No overuse is permitted
– Non-liability principle
– No guarantee on the service provided
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3. Ask for a copy of the data
• Asynchronous access to the data
– Use with care, read the metadata, and update your copy !
• Only available for
– public services and their contractors, education and research
– a specific purpose (no other use permitted)
– a limited time
• Accessible under the terms of a licence -http://geoportail.wallonie.be/files/LicData.pdf
– Non-liability principle
– No guarantee on the service provided
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4. Freely download and use the data ?
• Try the keyword “open data” in the catalogue...
• More and more producer are willing to open up their data, but we lack a clear framework to do it.
• Strategic plan for geomatics in Wallonia (PSGW) -http://geoportail.wallonie.be/files/docs/PlanStrategiqueGeomatique/PSGW_approuve.pdf
– Adopted by the government on May 8th 2014
– Towards open data for geographic data in Wallonia
• 2014-2019 Policy Statement (DPR)
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The Geoportal of Wallonia : come in and discover geographic data
• Introduction
• Enhance geographic data discoverability through a standardised metadata catalogue
• Focus on the main options for accessing geographic data through the Geoportal of Wallonia
• Conclusion
Conclusion
• Geoportal of Wallonia: a big step forward towards discoverability and reuse of geospatial data through the use of standards
– Offer visibility and accurate information about the data
– Offer standardised access to the data
Reduce duplication of existing or similar data
Stimulate reuse of data
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Conclusion
• Challenges
– Open data
– Cross-domain exchange
– Data and metadata acculturation
• Opportunities
– Strategic plan (PSGW) and 2014-2019 Policy Statement (DPR)
– INSPIRE
– Open data pioneers
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Now... Come in and discover geographic data of Wallonia... and contribute
Vincent Bombaerts – Public Service of Wallonia
[email protected] - @vbombaerts
http://geoportail.wallonie.be