Report from the TWG Statistical Units (SU) and Population Distribution – Demography (PD)
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Transcript of Report from the TWG Statistical Units (SU) and Population Distribution – Demography (PD)
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1INSPIRE Conference, Edinburgh 1
Report from the TWG
Statistical Units (SU)
and
Population Distribution – Demography (PD)
Edinburgh June 30th, 2011 by Udo Maack
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2INSPIRE Conference, Edinburgh 2
Theme Statistical Units andTheme Statistical Units andPopulation Distribution - DemographyPopulation Distribution - Demography
Bring together the two worlds:
The one of Geographers and the one of Statisticians
• Geographers use maps
• Statisticians use numerical values
to describe the world or part of them.
Two Views:
A statistical value is an attribute of a region (SU)
A related region is an attribute of a statistical value (PD)
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3INSPIRE Conference, Edinburgh 3
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Models / concepts behind:-Maps with Statistical Units
- Fields of a table or
- Multidimensional data cubes
Sex[male, female]
Year of observation
Age[0-100]
Region[NUTS]
“2025”Popolation count
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4INSPIRE Conference, Edinburgh 4
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Multidimensional data cubes are the base of the concept of the SDMX Standard(Statistical Data and Metadata eXchange – ISO /TS 17 369)
Pittfalls linking statistical and geographical data by InspireID:
- Responsibility split between (N)SI and (N) MA- Different licensee policies- Coordination of creation of identifiers- Inspire ID’s are to complex
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5INSPIRE Conference, Edinburgh 5
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Main achievements SU:
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6INSPIRE Conference, Edinburgh 6
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
SU Grid package:DS of Geographical Grids (Annex I) did not achive the requirements. Main concerns:
- Grid size limited to 10n meter(125m, 200m, 250m and 500m required)
-Rules for construction of the Grid-ID do not allow coding of intermediate values.
New rules for Statistical Grids: – Limitation suspended and more – Rules for coding the ID of each grid size
allowing the EPSG-Code for coding the CRS
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7INSPIRE Conference, Edinburgh 7
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
SU Vector package:
The feature type VectorStatisticalUnit – Generic model– using the GM_object with some constraints
(=> Area, Line and Point SU are allowed)
– Allows to define hierarchal dependencies– Allows tessellations as topological constrains– Evolutions of statistical units can be described
! Feature type NUTS defined in AU (Annex I) are not compatible
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8INSPIRE Conference, Edinburgh 8
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Main achievements PD:Class Population Distribution – Demography (I)
<<feature type >>StatisticalDataDistribution
+inspireID (???)+ domain+ universe+ measure+ classification+ measurementUnit+ statisticalMeasurementMethod+ period of Measurement+ period of Reference+ period of Validity:+ values: StatisticalDataValue Voidable lifecycle
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9INSPIRE Conference, Edinburgh 9
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Main achievements PD:Class Population Distribution – Demography (II)
<<data type >>Statistical Data Value
+ value +specialValue+flag+comment+dimensions:StatisticalDataDimensions Voidable +periodOfMeasurement
<<data type >>Statistical Data Dimensions
+ classifications [0..n]+ geoReference
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10INSPIRE Conference, Edinburgh 10
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Open issues (general):-Inspire metadata concept not flexible enough to allow the integration of searching in statistical databases to provide user defined statistical data?- SDMX and INSPIRE relation?- Which data have to be provided?
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11INSPIRE Conference, Edinburgh 11
Theme Statistical Units andTheme Statistical Units andPopulation Distribution / DemographyPopulation Distribution / Demography
Open issues (reviewers and testers):- Is the information of the Evolution class sufficient for updating linked user own data?
- Specification Document and provided GML not aligned!!
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12INSPIRE Conference, Edinburgh 12
?Thank you