2. First Workshop on European Reference Grids (EuroGrid 2003): Ispra, Italy 27th-29th October 2003 Aggregation and disaggregation of statistics Statistics Denmark Erik Sommer

3. Ispra, Italy October 27-29, 2003. 2 Presentation - Content Building a national square grid Disclosure of statistical data Supply and demand Selling statistical data Partnerships Integration with other countries Future work

4. Ispra, Italy October 27-29, 2003. 3 GRIDdata - CLUSTERdata København, Danmark

5. Ispra, Italy October 27-29, 2003. 4 Danish National Grid – 5 grid sizes SizeName/NetGrid IDColour 100 kmOverviewKN100kmDK | Grey 10 kmPlace nameKN10kmDK | Green 1 kmBasicKN1kmDK | Red 250 m250 meterKN250mDK | Orange 100 mHectareKN100mDK | Blue

6. Ispra, Italy October 27-29, 2003. 5 100m_62237_5749 Aarhus Kongreshus, Amaliegade 23, 8000 C. 1 km- og 100 m-grid

7. Ispra, Italy October 27-29, 2003. 6 Grid ID Formel: Prefix+’_’+Str(Div(N/f))+’_’+Str(Div(E/f)) Formel: Prefix+’_’+Str(Div(N/f))+’_’+Str(Div(E/f)) Northing: 6.223.600 m Easting: 574.900 m Northing: 6.223.600 m Easting: 574.900 m 100m_62236_5749

8. Ispra, Italy October 27-29, 2003. 7 Specification – National Square Grid UTM projection, zone 32 Datum used is EUREF 89 All cell names must refer to the original UTM32\EUREF89 projection to ensure standardized names.

9. Ispra, Italy October 27-29, 2003. 8 Building adresse/street entrance

10. Ispra, Italy October 27-29, 2003. 9 The key to griddata – building address/street entrance

11. Ispra, Italy October 27-29, 2003. 10 Placement of addresses – calculated addresses Formel: Prefix+’_’+Str(Div(N/f))+’_’+Str(Div(E/f)) Formel: Prefix+’_’+Str(Div(N/f))+’_’+Str(Div(E/f)) Northing: 6.223.600 m Easting: 574.900 m Northing: 6.223.600 m Easting: 574.900 m 100m_62236_5749

12. Ispra, Italy October 27-29, 2003. 11 Person – Home – Dwelling - Workplace

13. Ispra, Italy October 27-29, 2003. 12 Placement of addresses – corrected addresses

14. Ispra, Italy October 27-29, 2003. 13 STATISTICAL INFORMATIONSYSTEM Person id: Person number Workplace or education (daytime) Home Dwelling (night-time) Address Health Taxes LabourmarketEducation Social etc CPR Person BBR Building CVR Busines Questionaire Inter- view Parcel

15. Ispra, Italy October 27-29, 2003. 14 Guidelines for discloure of data

16. Ispra, Italy October 27-29, 2003. 15 Distribution of Households 100 x 100 meter – 1. January 2003, Denmark

17. Ispra, Italy October 27-29, 2003. 16 Distribution of Households 1x1 km – 1. January 2003

18. Ispra, Italy October 27-29, 2003. 17 Building Block: Number of households

19. Ispra, Italy October 27-29, 2003. 18 Options when clustering gridcells Proximity – districts, tradearea required to be a neighbour Optimizing – finding gridcells with equal value without necessarily being a neighbour

20. Ispra, Italy October 27-29, 2003. 19 Finding gridcells with equal value without necessarily being a neighbour.  Optimizing:

21. Ispra, Italy October 27-29, 2003. 20 Input clustering cells

22. Ispra, Italy October 27-29, 2003. 21 OUTPUT: Dataset for Clusters

23. Ispra, Italy October 27-29, 2003. 22 Selling statistical data National level Consumermarket Public sector Reserarch Selling directly or through partners

24. Ispra, Italy October 27-29, 2003. 23  Segmentation New customers

25. Ispra, Italy October 27-29, 2003. 24  Ownership dwelling > 95%

26. Ispra, Italy October 27-29, 2003. 25  Householdincome 450.000+ > 65%

27. Ispra, Italy October 27-29, 2003. 26  Households with children > 60%

28. Ispra, Italy October 27-29, 2003. 27  Ownership > 95%  Householdincome 450.000+ > 65%  Households with children > 60%

29. Ispra, Italy October 27-29, 2003. 28 Calculated addresses www.kms.dk

30. Ispra, Italy October 27-29, 2003. 29 Calculated addresses www.kms.dk

31. Ispra, Italy October 27-29, 2003. 30 Access to addresses in Denmark Calculated address coordinates www.kms.dk Improved access to public data From 1. January 2003 a number of public data can be used freely. State, counties and municiapalities have made an agreement giving access to different registers including Building Register Data (BBR) and X,Y- address coordinates www.ebst.dk/ejendomwww.ebst.dk/ejendom or www.ois.dkwww.ois.dk

32. Ispra, Italy October 27-29, 2003. 31 Conzoom online – www.conzoom.netwww.conzoom.net

33. Ispra, Italy October 27-29, 2003. 32 Nordic maps and griddata (Conzoom online)

34. Ispra, Italy October 27-29, 2003. 33 Nordic griddata online (Conzoom)

35. Ispra, Italy October 27-29, 2003. 34 Householdstype – singles with no children

36. Ispra, Italy October 27-29, 2003. 35 Future work Access to addresses Access to statistical data Disclosure policy Dissemination Integration (grid, data, pricing and promotion)

37. Ispra, Italy October 27-29, 2003. 36 Access Statistical data Thank you for your attention For further information please contact: Erik Sommer: www.dst.dk/kvadratnet eso@dst.dk phone +45 3917 3582