Metadata in EuroGEOSS project (WP5 Experience from Slovenia)

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1 Metadata in EuroGEOSS project (WP5 Experience from Slovenia) Barbara Medved-Cvikl University of Ljubljana Biotechnical faculty

2 Agenda Metadata what is it? About the role of metadata in process of interoperability INSPIRE & Metadata Our contribution to EuroGEOSS Metadata tools Software used for WMS Experience from EuroGEOSS projects Example and problems facing in Slovenia and DMCSEE region Objective: Represent an EuroGEOSS issues from partner site

3 WP5-Drought DROUGHT SEQUENCE Meteorological Hydrological Environmental Ecosystems Agriculture Habitation Socio-economic drought

4 Why metadata are needed?

Without metadata you have to chek all data files for Southeastrn Europe Data file for SE Europe Data file for SE Europe I want to select areas in SE

5 Without metadata you have to chek all data files for Southeastrn Europe Data file for SE Europe Data file for SE Europe I want to select areas in SE Europe where drought is occuring Data file for SE Europe Data file for SE Europe Very time consuming! Data file for SE Europe Data file for SE Europe

6 With metadata we can easily browse summary of all data files Data files for SE Europe Data files for SE Europe Metadata (summary of data with standard language) Data files for SE Europe Data files for SE Europe Data files for SE Europe Data files for SE Europe

7 With metadata we can easily browse the summary of all data files Data files for SE Europe Data files for SE Europe Data files for SE Europe Data files for SE Europe Data files for SE Europe Data files for SE Europe

8 Arhive Transfer 1. Create Content 2. Document 3. Catalog 4. Publish 5. Locate 6. Evaluate 7. Explore 8. Employ 9. Arhive Use Discover, Evaulate Publish services Catalog Portal Metadata Create data and service Document with Metadata

si/gerk/) not important / too much trouble many

9 Metadata issues in Slovenia Problems: focus on data focus on services ( not important / too much trouble many informations are colleted on level of ownership (drought damage data)

10 meteorological data and metadata are avaliable on web (

11 Basis to build metadata for Slovenia INSPIRE directive Infrastructure for Spatial Information in the European Community EuroGEOSS requirements

Software for producing metadata There is a variety of free, commercial and on-line software tools available to support metadata development. CatMDEDit /TeIDE consortium (http://catmdedit.sourceforge.

12 Software for producing metadata There is a variety of free, commercial and on-line software tools available to support metadata development. CatMDEDit /TeIDE consortium ( ArcCatalog /ESRI ( ISO Metadata Editor/INTA ( Inspire metadata editor (

13 CatMDEdit Inspire Metadata Editor Benefits it includes all the sections of interest for metadata It is opensource software accordance with other software easy to use compilance with INSPIRE directive it forms metadata on level of data sets, data series and services created xml files can be integrated in CaMDEdit and other metadata software Weaknesses medium difficulty degree in use possible unaccordance with other aplication available on Web low number of groups for metadata there are none special sections for data distribution of the data and of the services aplication is available on INSPIRE Geoportal

15 Advantges of CatMDEdit it is possible to import and export XML files of dieffrent standards (ISO19115, Dublin Core) metadata generation tool metadata edtion tool metadata validation tool metadata management tool

16 Edition of Keyword

17 Slovenian contribution to Eurogeoss Slovenia contibuted to cataloge 58 drought related data and 1 metadata on services (DMCSEE WMS Services)

18 Some problems where identified regarding this activity: Standard to be used: even by using ISO 19115, the selection of a profile, such as ISO Core, or the selection of other standard (such as INSPIRE metadata, altought implemented as ISO 19115) is not an easy task Language to be used: the choice between original language (that for instance, INSPIRE Metadata Implementing Rules [INSPIRE 2009] indicates is the defult if the data set is in the orginal language) or English (that, in the context of the European project, will increse the ease of access and discovery of described resource)

19 Description of data in tabular format, and included within reports with a bigger scope. Dealing with property rights: for instance, in the case of delaing with data intended for public service but not publicly avaliable. Dealing with irregular temporal coverage. Drought data are sometimes only collected when drought is recognized as a national problem. Source: d/klima1/zaslon/pdf%20 Zaslon/42- Sedma%20susa%20v%20z adnjih%2041%20letih.pdf

20 Fundamental problems with metadata Tied do datasets Hard-coded (xml files are hard readble for humans) Static sanpshot (problems with up-dating) No way to retrieve supplementary material Process of subtraction Implicit links Metadata quality is mostly limited on syntax. Metadata are created by experts for experts. As with any user group, there are varying levels of expertise and understanding of the subject.

21 Weeknesse of Inspire directive Definition of metadata in the INSPIRE directive is rather thin. ( ) metadata means information describing spatial data sets and spatial services and making it possible to discover, inventary and usethem, ( ) Metadata shall include information on the following: ( ) conditions applaying to access to, and use of spatial data sets and services and where applicable, coresponding fee ( ) limitations on public access an the reasons for such limitations, in accordance with Article 13 End-Users License Agreement

22 Inspire strctures data on the top level with rough catagory similar to the Dewey Decimal Classification. The Annexes of the EU-Directive define what type of datasets need to be described and the ISO Standard defines how to describe them. Problem: Inspire directive is setting the minimum set for descreibnig spatial data. The experience showed that this minimu set is not enough for drought data. With use of INSPIRE directive is provided a good technical quality of metadata but the semantic and value quality is lower.

23 What is web mapping? Delivery of location based information via the internet But it s more than just a map! Fundamental to the development of the Geoweb Characteristics Leverages Web 2.0 concepts / philosophy location can be considered as a key element for making the internet closer to the real world. Strong visualisation of information Large amounts of information stored/delivered Potentially rich with functionality Interactive Distributed & dynamic Bandwidth intensive Examples: Commercial Google maps/earth, Government MKGP GERK, Atlas okolja, EDO (European drought observatory)

24 Typical web mapping technology Typical web mapping architecture Presentation Browser Internet Web map server Services Web map server Data store Files Database

25 Software for WMS WMS (Web Map Service) is o protocol for requesting rendered map tiles from GIS server Allows access to the atribute information via XML REST-ful protocol- necessary within the URL configuration of the Web Map Server Client GIS data Mapserver Map Map Cache

26 request= getmap location= bbox= format=png User A map

0) Mapserver is a lightweight Runs in either Apache httpd or IIS

27 Choosen Server Mapserver is a robust software (lounched in the mid-1990s, currently version 5.6.0) Mapserver is a lightweight Runs in either Apache httpd or IIS (Internet Information Server/Services) MapServer supports many file formats Easy to install More difficult to configurate

28 Benefits from EuroGEOSS project Provide a central repository of drought relavant metadata that can be accessed by everyone over the Internet. A place for data producers to publish their data and data consumers to find the data. Using CatMDEdit and INSPIRE metadata editor, publishers can publish XML files to multiple metadata servers. New services Interoperability

29 Instead of conclusion

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Compass INSPIRE Services. Compass INSPIRE Services. White Paper Compass Informatics Limited Block 8, Blackrock Business Compass INSPIRE Services White Paper 2010 Compass INSPIRE Services Compass Informatics Limited Block 8, Blackrock Business Park, Carysfort Avenue, Blackrock, County Dublin, Ireland Contact Us: +353 1 2104580