network services for spatial data in european geo-portals...
TRANSCRIPT
Network Services for Spatial Data in European Geo-Portals and their Compliance with ISO and OGC Standards
Elżbieta BieleckaAgnieszka ZwirowiczDariusz Dukaczewski
Instytut Geodezji i Kartografii
Krakow , 23 - 25 June 2010
INSPIRE Conference 2010INSPIRE as a Framework for Cooperation
THE AIM OF THE STUDY
Analyses the current state of play of national geo-portals development and their compliance with ISO and OGC standards.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
METHODOLOGY (1)
Ex post evaluation, based on data collected through web survey at the beginning of 2010.Analysis from the point of view of end-user.No investigation has been made on geo-portal with limited access to unregistered user.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
METHODOLOGY (2)
European geo-portals were analyzed in terms of:visibility of map viewer, the number of language versions of view services,the functionality of view services,availability of network services like WMS, WFS, CSW, and compatibility with the relevant OGC specifications and ISO standards.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
METHODOLOGY (3)
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
Issue Parameters or measuresVisibility Link to the map viewer Accessibility No of language versions
Map viewer GUITypes and No of functionsCompliance with INSPIREOGC WMS standard version
Discovery servicesExistence of serviceCompliance with INSPIREOGC CSW standard version
Download servicesExistence of serviceCompliance with INSPIREOGC WFS standard version
RESULTS (1)
30 of 43 European States do have official national geo-portal, with Denmark, Finland, Slovakia and Switzerland have two or more.Spatial data view service is available in 28 States.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS View service visibility
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS View service visibility
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Number of languages
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Functionality of view services (1)
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
Type of functions No. of countries
EU geo-portal
Navigation 29 +Display 29 +
display overlay 24 +display legend 27 +display metadata 11 −
Identity/select 18 −Search 24 −Co-ordinates 19 +Measure 17 −Print 21 −Other 14 +
Functionality of view services
No. of functions
No. of countries
Low < 12 3Medium low 13-18 11Medium high 19-24 12High > 25 3
RESULTS Functionality of view services (2)
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Functionality of view services (2)
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Discovery and download services
Only a few geo-portals implemented discovery and download services in user friendly way.Sometimes only metadata information about data set is available.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Compliance with INSPIRE and OGC standards
View serviceEN ISO 19128:2005(E)OGC standards – WMS 1.3.0
19 out of 30 examined geo-portals have implemented WMS
21% compatibile
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Compliance with INSPIRE and OGC standards
Download serviceISO/DIS 19142, ISO/DIS 19143, WFS Implementation Specification.
Non of the analysed geo-portal offered direct access to download services using Web Feature Service OGC standard.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS Compliance with INSPIRE and OGC standards
Discovery serviceISO 19115, ISO 19138, COMMISSION REGULATION.
Metadata are collected in accordance with different standards (e.g. ESRI, NGDF).Out of 14 analyzed catalog services just 2are compatible with the OpenGIS Catalogue Service Implementation Specification.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
RESULTS State of play in development of geo-portals in the European States
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
No. of European Countries
%
Geoportal 30 69,8%View services 29 67,4%WMS 19 44,2%Catalogue services 14 32,6%Total European States
43100,0%
RESULTS European Geo-Portals in Users’Opinion
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
CONCLUSIONS
The current geo-portal activities in Europe are mostly driven by the INSPIRE Directive.Each of Member States has started some investments in implementing a national geo-portal.The state of play differs - Some portals haveimplemented a lot of different functions, even much more than is required by INSPIRE.There is a lack of consistency in naming tools and functions.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
CONCLUSIONS
Major difficulties in obtaining information about viewing, discovery and downloading services were:
the language barrier,the discrepancy between information set out in the description of services (including information available in on-line help) and information available directly through the service interface,high dynamic of geo-portals functionality.
Elżbieta Bielecka, INSPIRE Conference 2010 INSPIRE as a Framework for Cooperation
