elf – a multiscale approach · elf topo global : 3./4. december 2015. the competitiveness and...

the Competitiveness and Innovation framework Programme (CIP) ICT Policy Support Programme (PSP) Call 6 (Grant 325140) EUROPEAN LOCATION FRAMEWORK

Presentation to:

Author:

Date:

2nd ICA / EuroSDR NMA Symposium

Sonja Werhahn (BKG)

3./4. December 2015

3./4. December 2015

ELF – a multiscale approach


Agenda What is ELF?

Why 5 LoD?

ELF Data model

ELF Data specifications

Generalisation in ELF

3./4. December 2015


Started 1st March 2013 36 month project (+ some extra months) 30 partners EuroGeographics 15 national/regional data providers 3 service integrators 6 application developers and domain experts 2 universities 3 user community representatives Based on the outcome of the ESDIN project (2009-2012)

The ELF Project

More information about the ELF project: www.elfproject.eu

www.locationframework.eu

http://www.elfproject.eu/�http://www.locationframework.eu/�


Presentation to:

Author:

Date:

27 May, 2015

WP3 WP2 WP4 WP5 WP6 WP7 WP8 WP9

ELF Master

ELF Global ELF Regional

250 builders

13 million euros 14 countries


• Combine national reference geo-information services through the ELF platform

• New Basemap service for Europe based on national services • Geo Locator service based on geographical names, addresses,

administrative units

• Geo-tools for making national data interoperable • Finding and accessing reference data at source (Geo Product Finder) • Linkage with other content (national or thematic) • Easy Web Maps for Applications through Open & ArcGisOnline platforms • Support several ELF affiliated platforms (ESRI ArcGISOnline, Open Source

Oskari Platform)

• Support of European languages

This is ELF… from data to service


Agenda What is ELF?

Why 5 LoD? ELF Data model



3./4. December 2015


Why 5 levels of detail? ELF wants to provide data for several use cases National level – where multiple national level interests are to be served in a consistent way Cross Border – where the interest may still be on national data but where it borders with

neighbouring countries and needs to “edge match” at the border Pan European – where it is important to have data from all of Europe in a consistent and

interoperable format

Data from local to global scale available from ELF platform

Data sources: NMCAs EuroGeographics products EuroRegionalMap, EuroBoundaryMap and EuroGlobalMap

(more about EuroGeographics products: http://www.eurogeographics.org/products-and-services)

3./4. December 2015


LoD in ELF

LoD Scale range Thematic scope Master LoD0 Larger than 5k Cadastral parcels, Buildings,

Addresses, Geographical Names Master LoD1 5k – < 25k ELF Topo Master LoD2 25k – < 100k ELF Topo generalised Regional 100k – 500k ELF Topo Regional Global > 500k ELF Topo Global

3./4. December 2015


Agenda What is ELF?

Why 5 LoD?

ELF Data model ELF Data specifications


3./4. December 2015


ELF Data model Based on INSPIRE

relevant feature types, data types, codelists and enumerations imported from INSPIRE

“NMCA profile for INSPIRE” (topographic reference data)

an existing INSPIRE implementation by default should be conformant to the ELF specifications

all ELF additions have to be optional (not even voidable) Put no constraints on INSPIRE that affects the INSPIRE GML application

schema

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Planed Modelling approach: Scale-dependant one model per level of detail

Share work among experts from different level of details

Scale-dependent requirements are defined directly in the model and schema files

• Selection of themes, application schema, feature types • Voidable attributes are tagged as always or never available

Issues: There is one set of application schema files for each level of detail. This increases

the work for service implementers and software developers.

It might also be confusing for users as the differences between the models might be marginal.

Documentation is created for each level of detail (5 specification documents, feature catalogues, etc.)

3./4. December 2015


Revised Modelling approach: Scale-independant

A single model for all level of details

one set of application schema files which ease the work of service implementers and software providers.

Using the profiles it is possible to create feature catalogues for each level of detail.

Issues: Editors of the data model need to understand the objectives for all levels of detail.

Scale-dependant requirements are less obvious and strict from the data model

• Managed by introducing profiles • ELF extensions are modelled as optional/voidable • Requirements for the different LoD have to be specified in the data

specification document

3./4. December 2015


ELF Data Model

3./4. December 2015


Agenda What is ELF?

Why 5 LoD?

ELF Data model

ELF Data specifications Generalisation in ELF

3./4. December 2015



3./4. December 2015

Data Specifications

INSPIRE compliant NMCA-profile for INSPIRE

Include Master LoD

Include EuroGeographics products


Why extending INSPIRE? ELF delivers authoritative, interoperable, cross-border reference data

Seamless and consistent across borders enabling spatial analysis in a European, regional and local cross-border context;

Consistent between themes, so that different themes can be used together;

Consistent between resolutions, so that a feature present on national level is present at European regional and global level if it should be present according to selection criteria;

Up-to-date, maintained and quality ensured enabling users to meet their requirements.

Additional needs by users

3./4. December 2015


Data Content by themes and Level of Detail

3./4. December 2015

MASTER LoD0 Master LoD1/2 REGIONAL GLOBAL

Cadastral Parcels (CP)

Addresses (AD)

Administrative Units (AU) Administrative Units (AU) Administrative Units (AU)

Hydrography (HY) Hydrography (HY) Hydrography (HY)

Sea Regions (SR) Sea Regions (SR) Sea Regions (SR)

Transport Networks (TN) Transport Networks (TN) Transport Networks (TN)

Geographical Names (GN) Geographical Names (GN) Geographical Names (GN) Geographical Names (GN)

Elevation (EL) Elevation (EL) Elevation (EL)

Land Cover (LC) Land Cover (LC) Land Cover (LC)

Buildings (BU) Buildings (BU) Buildings (BU)

Protected Sites (PS) Protected Sites (PS)

Miscellaneous (MISC)


ELF Data specifications Consists of several documents and files:

One Data Specification document

One UML Data Model

GML Application Schema files for each theme

ELF Mapping Table Templates for each LoD

Feature catalogue for each LoD

Data quality rules for each LoD

Data capture rules for each LoD

3./4. December 2015


3./4. December 2015

Feature catalogues for each LoD


Data quality rules: Example

3./4. December 2015


Data capture rules: Example

3./4. December 2015


Agenda What is ELF?

Why 5 LoD?

ELF Data model



3./4. December 2015


Generalisation: Vision NMCAs provide data only at Master

LoD0 and 1

All other LoD are derived automatically by generalisation tools

Advantages:

Data is consistent between LoD Edge matching only once Quality checking only once

Preconditions:

all information needed at lower LoD included in higher LoD

Good generalisation procedures available

3./4. December 2015


Generalisation: in ELF In the timeframe of the project:

Not all information needed at lower LoD is included in higher LoD (ELF Regional includes information not available at Master LoD)

Generalisation procedures available for Regional to Global

Limited timeframe allows only limited development Master LoD1 to Master LoD2

NMCAs provide data at Master LoD0&1

ELF Regional is derived from EuroGeographics products EuroRegionalMap and EuroBoundaryMap

3./4. December 2015


From isolated components to integrated, cross-border seamless authoritative reference data …

Thank you!

3./4. December 2015

Foliennummer 1AgendaThe ELF Project�Foliennummer 4This is ELF… from data to serviceAgendaWhy 5 levels of detail?LoD in ELFAgendaELF Data modelPlaned Modelling approach: Scale-dependantRevised Modelling approach: Scale-independantELF Data ModelAgendaELF Data specificationsWhy extending INSPIRE?Data Content by themes and Level of DetailELF Data specificationsFeature catalogues for each LoDData quality rules: ExampleData capture rules: ExampleAgendaGeneralisation: VisionGeneralisation: in ELFFrom isolated components to integrated, cross-border seamless authoritative reference data …�

elf – a multiscale approach · elf topo global : 3./4. december 2015. the competitiveness and...

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