Project European CDDA and INSPIRE : scope, transformation workflow and mapping rules

Transcription

1 Project European CDDA and INSPIRE : scope, transformation workflow and mapping rules INSPIRE Conference 2014 Workshop: Implementing Existing European Spatial Data of Designated Areas Based on the INSPIRE Protected Sites Transformation Workflow Darja Lihteneger Aalborg,

2 Outlines Project information Topic, objectives and scope Transformation workflow Specifically on conceptual mapping: Mapping between CDDA and INSPIRE PS data models Open issues Lessons learnt

3 Project information Initiated, financed and led by the European Environment Agency Time period: September 2013 October 2014 Project team composition (thematic domain, IT and GIS, INSPIRE): EEA experts Experts from European Topic Centre on Biological Diversity (ETC/BD) External consultancy: Tracasa Additional involvement of Eionet is planned for specific testing with the outcomes of this project

4 Project topic Common Database on Designated Areas: European inventory it holds information about protected areas and the national legislative instruments, which directly or indirectly create protected areas INSPIRE Protected sites: area designated or managed within a framework of international, Community and Member States' legislation to achieve specific conservation objectives Update of INSPIRE PS Technical Guidelines was published on April 2014

5 Project objectives through the prototype provide the CDDA data sets (European database) in conformity with the INSPIRE Protected sites data specifications (Implementing Rules and Technical Guidelines) knowledge building of INSPIRE implementation share experiences within Eionet, with wider community implementing INSPIRE and with INSPIRE MIG proposals for the updates of the CDDA data flow and for the updates of relevant INSPIRE data specifications, if applicable to provide an input for the EEA workflows

6 Project scope evaluate the existing European CDDA data sets with the INSPIRE Protected sites Simple application schema design and follow the transformation workflow develop and document the conceptual mapping rules transform the European CDDA data sets into GML provide the approach to validation identify open issues and draft proposals for updates Outcomes: Initial study nature and biodiversity interestgroup/library/bdc/cdda andinspire implementation Model of the transformation workflow Mapping rules and matching table Proof of concept for transformation and data sets transformed into GML Report on validation with examples of tests Open issues

7 CDDA data flow and project scope Countries contributions (data) Existing spatial data = European CDDA CDDA data flow is not changed! CDDA data model CDDA data model (sub set) Source data model INSPIRE PS data model Conceptual level Target data model Process Analysis Mapping Transformation Validation Published spatial data set in EEA data service (Shapefile + tabular data) Input data Project scope Output data GML file(s) Data

8 Transformation workflow

9 Transformation basis INSPIRE Directive Art.7(3): Spatial data sets shall be made available in conformity with the implementing rules either through the adaptation of existing spatial data sets or through the transformation services referred to point (d) of Article 11(1) Transformation workflow is generic and applicable to any spatial data set to be transformed with regard to the required data specifications In this project, transformation workflow presents the way how to transform the existing European CDDA data sets with regard to the INSPIRE Protected sites

10 Transformation workflow harmonisation process Relevant Data Model (harmonised) Initial/feasibility study of the transformation Identification of source and target data models Conceptual mapping Development and documentation of mapping rules Data transformation into GML Validation and testing of GML Publication of GML files

11 Transformation workflow experiences from the project on complexity & time allocation Complexity (Low, Medium, High) Time Relevant Data Model (harmonised) Identification of source and target data models is relatively easy L No need to (re)create source data model Both data models are well described! Initial study improved understanding Content discussion in forming the H mapping rules is highly important! Matching table = document the mapping Data evaluation and examples Guidelines mapping rules 10% 40% Choose of software, data preparation, 15% M testing, initial validation, transformation Uncertainties: how to execute tests, 30% H tools, evaluating approach, selective testing Publication of GML files (simple way) L 5%

12 Conceptual mapping

13 Conceptual mapping: focus and questions Focus: to fulfil the complete INSPIRE PS Simple application schema (including voidable elements) Questions to answer: Are the concepts the same definition, purpose? Which spatial objects, attributes and value domains can I map? What are the gaps? Is it possible to cover the gaps? Do I need an extension to INSPIRE PS to keep the CDDA purpose? What do I have to do if I don t have data in my database, but this is required by INSPIRE PS data specifications? How to map between data formats? Check the mapping rules with real data from CDDA!

14 Conceptual mapping: CDDA data model sub set used for mapping to INSPIRE PS Identified tables and attributes for mapping with INSPIRE PS Simple application schema set of interrelated tables, tabular data geometry of spatial objects is provided separately

15 Conceptual mapping: INSPIRE PS data model complexity of mapping INSPIRE PS Simple application schema limited set of fundamental attributes Straightforward (easy) mapping Complex mapping requires additional thematic and INSPIRE PS discussions

16 Conceptual mapping: details 1 / 7 Geometry INSPIRE PS CDDA Geometry: polygons, multi polygons polygons can overlap

17 Conceptual mapping: details 2 / 7 inspireid INSPIRE PS CDDA Several attributes are used: SITE_CODE PARENT_ISO ISO3 Additional work is needed to generate the values of INSPIRE attribute namespace Inspire identifier is generated temporarily, as data providers might create their own in the future! SITE_CODE Formula = EU.EUROPA.ENVIRONMENT.PS.CDDA. <PARENT_ISO>.<ISO3> Not relevant and not mapped

18 Conceptual mapping: details 3 / 7 INSPIRE PS legalfoundationdate CDDA Attribute: YEAR year of establishment; the year the site was first time designated Type DateTime Provide correct format! Proposed: 1 st January of related year at 00:00:00 yyyy mm ddtxx:xx:xx

19 Conceptual mapping: details 4 / 7 INSPIRE PS legalfoundationdocument CDDA INSPIRE PS: a reference to the legal act that created the protected site! CDDA: reference to the legal act establishing a designation type! Two attributes include information: Law and Lawreference Different concepts between INSPIRE PS and European CDDA! Mapping is not possible for European CDDA! Data providers might have information at protected site level about the legal act that created protected site, which could correspond to INSPIRE PS legalfoundationdocument Provided as voidable

20 Conceptual mapping: details 5 / 7 INSPIRE PS sitedesignation CDDA Information on national designations is important part of CDDA National designation schemes are not in INSPIRE PS Simple application schema! National designations shall extend the INSPIRE PS code list Designation SchemeValue! national designation type category attribute: Category national designation type code attribute: DESIG_ABBR extend nationaldesignationtypecategory nationaldesignationtypecode Attribute: IUCNCAT Make conversion between IUCN code list in INSPIRE PS and CDDA! IUCN category is management category!

21 Conceptual mapping: details 6 / 7 INSPIRE PS percentageunderdesignation CDDA The corresponding attribute is not explicitly provided in the CDDA Implicit (default) value based on the CDDA purpose could be used for different designation types For nationaldesignationtypecategory and nationaldesignationtypecode the default value is 100 (100% of site under the designation) Information about the % of site under IUCN categories in not provided this information is not known. Default value 1 is used (workaround!) If a value is not provided for this attribute, it is assumed to be 100%. Difficulties in the case information is not known how to respect no data, INSPIRE definition and voidable?

22 Conceptual mapping: details 7 / 7 INSPIRE PS sitename siteprotectionclassification CDDA Attribute: SITE_NAME Follow complete INSPIRE data type GeographicalName! Correlated attribute doesn t exist in CDDA! Default value from INSPIRE PS enumeration is appropriate to use in addition: natureconservation

23 Conceptual mapping: extended INSPIRE PS for CDDA purpose Minimum extension of INSPIRE PS for the purpose of European CDDA keeps the important information on national designations together with the INSPIRE PS!

24 Working with INSPIRE voidable properties voidable in INSPIRE means: for an attribute or association role a value of void may be made available if no corresponding value is contained in the spatial data sets maintained by the Member States or no corresponding value can be derived from existing values at reasonable costs. 2 types of voidable / nil reasons: INSPIRE and ISO (GML): INSPIRE ISO 19136: NilReason type ISO data types follow ISO NilReason

25 Conceptual mapping: summary on open issues Gaps in logical mapping different concepts: legislation related to the protected site in both data models: European CDDA doesn t require information on legal act creating the protected site, but at national or sub national level information on legal foundation document might be needed and available Definition of INSPIRE PS attribute percentage of protected area under designation causes difficulties when this information is not known / not available in a data set Clear guidelines are needed how to use voidable / nil reasons: ISO nil reason and/or INSPIRE voidable reason!

26 Conceptual mapping: summary main lessons learnt Important to involve experts from the thematic domain(s)! Conceptual mapping is time demanding, ensure enough time for this transformation workflow step! Don t force mapping if the meaning / purpose of concepts is too different! The current CDDA data model is highly compatible with the INSPIRE Protected sites Simple application schema Recommendation: to fulfil and keep the CDDA purpose, the minimum extension to INSPIRE PS is recommended to provide the national designations and categories All the code lists used in the extended CDDA INSPIRE PS data model are already available:

27 Thank you eea.europa.eu