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

EFGS - Lisboa 2011 2

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

EFGS - Lisboa 2011 3

Overview

National grid system

- defined in D96(ETRS89)/TM

- reprojected to D48/GK

- linked by cell IDs

EFGS - Lisboa 2011 4

Overview

EFGS - Lisboa 2011 5

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

EFGS - Lisboa 2011 6

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)

EFGS - Lisboa 2011 7

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

EFGS - Lisboa 2011 8

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“

EFGS - Lisboa 2011 10

KASPeR

Web mapping application for visualization of (statistical) data by selecting spatial units in combination with various cartographic layers from the Google Maps tool.

EFGS - Lisboa 2011 11

KASPeR - features

Powered by Google• Google maps

cartographic layers• Google maps search

feature

...

EFGS - Lisboa 2011 12

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)

...

EFGS - Lisboa 2011 13

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)

EFGS - Lisboa 2011 14

KASPeR - features

individual values for selected variables are obtained by moving the mouse over the spatial unit

EFGS - Lisboa 2011 15

KASPeR - features

Adjustable legend classes

EFGS - Lisboa 2011 16

KASPeR - features

Adjustable transparency of the data layer

EFGS - Lisboa 2011 17

KASPeR - features

Charts are shown when clicked on the spatial unit.

EFGS - Lisboa 2011 18

KASPeR - features

Explanatory data can be added to individual variables and/or to group of variables.

EFGS - Lisboa 2011 19

KASPeR - featuresScreen data can be exported to PDF.

EFGS - Lisboa 2011 20

Dissemination system in practiseK

AS

PeR

- b

ackg

roun

d

EFGS - Lisboa 2011 21

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

EFGS - Lisboa 2011 22

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

EFGS - Lisboa 2011 23

Perspectives & conclusions

INSPIRE

- INSPIRE grid

- metadata etc.

EFGS - Lisboa 2011 24

Th

ank yo

u!

http://www.gis.si/kasper/en/index.html

http://www.stat.si/GIS/baza.aspx?lang=en

EFGS - Lisboa 2011 25