igor kuzma, statistical office of the republic of slovenia tomaž Žagar, geodetic institute of...

Igor Kuzma, Statistical Office of the Republic of Slovenia

Tomaž Žagar, Geodetic Institute of Slovenia

GIS Portal – dissemination of geostatistics

igor.kuzma@gov.si

tomaz.zagar@gis.si

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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