igor kuzma, statistical office of the republic of slovenia tomaž Žagar, geodetic institute of...
TRANSCRIPT
Igor Kuzma, Statistical Office of the Republic of Slovenia
Tomaž Žagar, Geodetic Institute of Slovenia
GIS Portal – dissemination of geostatistics
Overview
Dissemination system
- data
- spatial resolution
- confidentiality & terms of use
KASPeR…
Perspectives & conclusions
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Overview
Geostatistics of higher resolution since Census 1971
Practically applicable since 1981 (Registers)
- mostly point located
- various methodologies
- grid data
National grid system
- D48/GK & D96/TM
- smallest grid 100 m X 100 m
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Overview
National grid system
- defined in D96(ETRS89)/TM
- reprojected to D48/GK
- linked by cell IDs
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Overview
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Overview
x,y x,yx,y - false coordinate
- covering the same area
- no overlapping problem
- applicable to old datasets in D48/GK
- regular square gird cell for data presentation
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Dissemination system - data
Population - number, sex, age groups, activity (yes/no), education (3 levels)
Households - number, size
Dwellings - number, area (classes)
Buildings - number, age (classes)
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Building an Interactive Mapping Atlas 8
Register of Spatial Units
Register of Real Estate
Tax RegisterBussines Register
Statistical Registerof Employment
Register of Dwellings
Central PopulationRegister
CensusesStatistical surveys
Dissemination system - data
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Dissemination system – spatial resolution
Administrative units
- Cohesion regions (NUTS 2)
- Statistical regions (NUTS 3)
- Municipalities (LAU 2)
- Settlements
Grids
- 10km, 5km, 2.5km, 1km, 500m, 100m
Other
- e.g. areas defined in municipial spatial plansEFGS - Lisboa 2011 9
Dissemination system – confidentiality & terms of use
no suppression for current variables
free access and download
source should be acknowledged
high spatial resolution friendly data suppression
grid dissemination rules applied to „other areas“
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KASPeR
Web mapping application for visualization of (statistical) data by selecting spatial units in combination with various cartographic layers from the Google Maps tool.
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KASPeR - features
Powered by Google• Google maps
cartographic layers• Google maps search
feature
...
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KASPeR - features
Spatial levels
• Automatic zoom option
• Extendable (new levels can easily be added)
• Input file formats:– ESRI Shapefiles *.shp
– Google Earth *.kml
– Geography Markup Language (*.gml)
...
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Kasper - features
Content• Extandable menu• Input file formats:
– ESRI shape files (*.dbf)– PC-Axis (*.px)– Comma-separated
values (*.csv)... (spatial units – defined in
spatial levels file – have to be reffered by variables to be shown on the map)
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KASPeR - features
individual values for selected variables are obtained by moving the mouse over the spatial unit
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KASPeR - features
Adjustable legend classes
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KASPeR - features
Adjustable transparency of the data layer
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KASPeR - features
Charts are shown when clicked on the spatial unit.
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KASPeR - features
Explanatory data can be added to individual variables and/or to group of variables.
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KASPeR - featuresScreen data can be exported to PDF.
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Dissemination system in practiseK
AS
PeR
- b
ackg
roun
d
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Perspectives & conclusions
KASPeR
- time slider
- optional view function
- automatic upload & update from SI-STAT database
(*.px files)
- various colour schemes in the legend
- classification scheme
- „hide“ navigational/info window
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Perspectives & conclusions
User response
- foreign users prefer administrative units
- decision makers prefer grids to support various
strategic plans (spatial patterns, clusters)
- municipial spatial planners use 100m grid or areas
defined in municipial spatial plans
- media & conferences
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Perspectives & conclusions
INSPIRE
- INSPIRE grid
- metadata etc.
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Th
ank yo
u!
http://www.gis.si/kasper/en/index.html
http://www.stat.si/GIS/baza.aspx?lang=en
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