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a potential European contribution to the UN geo-DB claude.luzet@ megrin .org. Who are we?. grouping(s) of European NMAs Comité Européen des Responsables de la Cartographie Officielle Multipurpose European Ground-Related Information Network. Why do we exist?. - PowerPoint PPT Presentation
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A potential European contribution to the UN geo-DB1
a potential a potential European European
contribution to the contribution to the UN geo-DBUN geo-DB
claude.claude.luzetluzet@ @ megrinmegrin .org.org
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A potential European contribution to the UN geo-DB2
Who are we?Who are we?
grouping(s) of European NMAs
Comité Européen des Responsables de la Cartographie OfficielleOfficielle
Multipurpose European Ground-Related Information Network
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Why do we exist?Why do we exist?
All NMAs have common concernsAll NMAs have common concerns
technical, organisational, legal, etc…
a discussion and exchange platform
CERCO since 1979CERCO since 1979 Increasing cross-boarder issuesIncreasing cross-boarder issues
dedicated and permanent resources
business-like structure
MEGRIN since 1993MEGRIN since 1993
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resourcesresources
annual budget ~€1 millionannual budget ~€1 million– 70% members financial subscriptions
coordination unitcoordination unit – Marne-la-Vallée (Paris-France)– 4~7 people
distributed resourcesdistributed resources
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our experienceour experience
national datasets are not interoperable technical differences
– format, standard, co-ordinate system, …– semantics, language, ...
policy differences– access rights, price policy, ...
>>> need for harmonisation mechanisms
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membershipmembership
MEGRIN
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membershipmembership
CERCO
+ MEGRIN
CERCO
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membershipmembership
CERCO
+ MEGRIN
CERCO
CERCO
observers
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L’Europe des 15L’Europe des 15
European
Union
member
countries
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Achievements and Achievements and on-going activitieson-going activities
(CERCO) Working Groups R&D projects metadata : GDDD - LaClef
admin.boundaries : SABE 1:250 000 : EuroMap 1:1 million : MapBSR & Global Map
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metadatametadata the current GDDDGDDD (since 1995)
– harmonised description of 360 ‘digital maps’
the future LaClef/EuroMapFinderEuroMapFinder– “unlocking public sector information”
• operational by Dec. 2000• fully multilingual• distributed system• XML exchange protocol• wide product range• e-commerce
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SABE : SABE : Seamless Administrative Seamless Administrative
Boundaries of EuropeBoundaries of EuropeCurrent version
• official national dataofficial national data
• 26 countries, ~100 000 polygons26 countries, ~100 000 polygons
• geometrically and semantically harmonisedgeometrically and semantically harmonised
• single licencesingle licence
• maintained : ‘91, ‘95, ‘97, 2001, (continuous?)maintained : ‘91, ‘95, ‘97, 2001, (continuous?)
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SABE SABE
Current version
added2000
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SABE SABE
Current version
Negotiation for 2001
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EuroMap 250EuroMap 250
UKR
MOL
Class 1
Class 2
Class 1: EUROMAP prototype
Class 2: EUROMAP extended with product 1 and external funding issues resolved
Vmap level 1 remote from actual demand
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Current assessmentCurrent assessment
our assetsour assets– the organisational structure– 10 year trans-national experience– actual concrete achievements
obstaclesobstacles– politician/deciders awareness : no EU GI policy– funding : insufficient to continue on our own
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Ex. DG13
several GI
initiatives ….
But no GI strategy or policy
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ETeMIIETeMII
European Territorial Management Information Infrastructure
Aims– To organise a network of excellence– To build consensus on technical issues– To raise awareness
E.G.I.I.E.G.I.I.
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7 Work-packages7 Work-packages
1 - Project management 2 - User’s requirements
3 - Reference data 3 - Reference data 4 - Metadata4 - Metadata 5 - Standards, interoperability5 - Standards, interoperability 6 - Dissemination 7 - Assessment and evaluation
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WP3 - Reference data WP3 - Reference data
Main aim:Main aim:– To reach a technical consensus on the
definition of reference data• at European level, at global level (GSDI)
– To address data policy issues
Focus on Focus on – minimum spec. for reference data, – main users: medium scales– the existing situation
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Global MapGlobal Map
Phase one – starts with existing global datasets– locally updated by NMA– Internet distribution starts end 2000
Phase two– integration of national datasets– flexible scale/resolution– legal framework and commercial exploitation
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MapBSRMapBSR
1:1 million topo
database pan-European
extension? contribution
to Global Map?
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ConclusionsConclusions
Extensive Geographic Information projects needs multi-year planning
Source-data is not interoperable Data maintenance is critical Data sources and quality are generally
difficult to assess
>>>> collaboration is the sensible approach
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Obstacles : not technicalObstacles : not technical
and of policiesand of policies
Lack of resources
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and driversand drivers
clear policiesclear policies contribute to:– collaboration, co-ordination– reduced costs (no duplication)– consistent information
(common references)
& attracts resources& attracts resources
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suggestionssuggestions
for the UN geo-DBfor the UN geo-DB
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Alice’s two keywordsAlice’s two keywords
COLLABORATIONCOLLABORATION
MAINTENANCEMAINTENANCE
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Risks Risks
Information not the sameInformation not the same– at global (and UN) level– at regional (eg. European) level– at national (government) level– in commercial products
Maintenance duplicatedMaintenance duplicated– at all levels– at different scales
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Suggested action planSuggested action plan 1. Reference data1. Reference data
– centrally stored, used by all
2. Cataloguing2. Cataloguing– UN system data and GIS related projects– links to other metadata resources
3. Co-ordination and agreements3. Co-ordination and agreements– internal to UN system– with NMAs, other (official) data owners– distributed databases
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UN ‘UN ‘reference’ reference’ data(base)data(base) reference-data, core-data, base-data or
fundamental data is NOT all the data needed ... but the common data needed by most
(UN) users should be (relatively) scale-freeshould be (relatively) scale-free
– today’s technology allowing on-the-fly feature selection/generalisation
– therefore higher available accuracy/resolution?
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Ref.data : suggested stepsRef.data : suggested steps
1. Assess UN various internal needs
2. Define a common “reference data”
- in co-ordination with other initiatives
3. Use current global/regional initiatives
4. Support filling out gaps
- emerging regional initiatives
- harmonisation initiatives
- data developments
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Number 1 best candidateNumber 1 best candidate
administrative boundariesadministrative boundaries– international boundaries– lowest (communal) administrative units– harmonised hierarchies (cf. EUROSTAT)– names (multilingual)– unique identifiers (cf. EUROSTAT)– additional key features
• coast-line, ‘big’ lakes • other land use, natural parks, ...
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Second bestsSecond bests
population, settlementspopulation, settlements transport & infrastructuretransport & infrastructure
– road network, tunnels, bridges, ...– rail, stations, ...– water-ways, harbours, ...– airport/airfields, ...– power lines, ...
DEMDEM
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An issue ...An issue ...
flexible &flexible &
incremental implementationincremental implementation
vs.vs.
semantic &semantic &
topological consistencytopological consistency
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a second issuea second issue
quality, richly attributed object oriented vector database, but rapidly aging
vs.
(or combined)
up-to-date information-poor
raster images
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… … a necessity ...a necessity ...
Think big (and medium term)Think big (and medium term)
andand
start small (and fast)start small (and fast)
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……and a citationand a citation
““The UN can do little on its own”The UN can do little on its own”
quoted by Mr. Kensaku Hogen
consider collaboration and agreements with main source-data providers
(NMAs, …) and their global or regional groupings (already harmonised datasets)
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UN Carto.section and GMUN Carto.section and GM
Start with the existing• avoid duplication (globally & nationally)• ensure interoperability• ensure sustainability
Build on the existing• availability vs. needs• plan for incremental evolution• collaborate with and support global/regional/national
relevant initiatives
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Global Map
GSDI
UN geoDB
NMA NMANMA NMANMA NMA
NMA
NMAIndustry
PCGIAPMEGRIN
PC-Americas
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