Hybrid solution in producing grid statistics Day 2, October, 24 / Established practices – Work Session 1 Mrs. Irena DUDOVA Mr. Arslan AHMEDOV
Day 2, October, 24 Established practices – Work Session 1 1
- Population distribution of Bulgaria per 1 sq. km grid net - INSPIRE compliant Day 2, October, 24 Established practices – Work Session 1 2
NOW I. III. V. VI. II. IV. Analyze VII. Specify Build Generate Data Analyze Geocoding Harmonize Population Test Disseminate Collection Design Framework Grid Validate Day 2, October, 24 Established practices – Work Session 1 3
Analyze Day 2, October, 24 Established practices – Work Session 1 4
Day 2, October, 24 Established practices – Work Session 1 5
Coordinate Dataset Type Coverage Source systems Census 2011 Statistical FULL BNSI Census Enumeration Areas Area-based PARTIAL 1970, Sofia, 1950 BNSI Grid 1 sq.km Area-based FULL ETRS89_LAEA Eurostat, EC Points of the addresses Point-based PARTIAL 1970, Sofia, 1950 Bulgarian Cadastral Agency Centroids of parcels Point-based PARTIAL 1970, Sofia, 1950 Bulgarian Cadastral Agency Ministry of Borders of Administrative Units Area-based FULL WGS 1984 35N Agriculture and Foods High resolution populated and build-up PARTIAL Ministry of Area-based WGS 1984 35N areas with land use and settlement codes (~95%) Agriculture and Foods DG Regional and Urban Policy, Urban Atlas Area-based PARTIAL ETRS89_LAEA EC Day 2, October, 24 Established practices – Work Session 1 6
Points of the addresses Points of the parcels Polygons of Populated Urban Atlas Areas of the Polygons settlements Day 2, October, 24 Established practices – Work Session 1 7
Districts Municipalities 70586 03277 0034A Addresses Populated Areas of the settlements Localization Units (Street, Boulevard, Square, Dwelling Complex, Neighborhood…) Day 2, October, 24 Established practices – Work Session 1 8
Districts Municipalities 70586 03277 0034A Addresses Populated Areas of the settlements Localization Units (Street, Boulevard, Square, Dwelling Complex, Neighborhood…) Day 2, October, 24 Established practices – Work Session 1 8
Geography Statistics Statistical dataset Map Features Reference data Statistical data Identifier Geometries Districts codes District codes (UCATTU*) Municipalities Municipality codes (UCATTU*) Populated places/ Settlements Settlement codes (UCATTU*) Street, Boulevard, Square, National Classification of Dwelling Complex, Neighborhood… Localization Units Addresses National Classification of Addresses Unified Classification of Administrative-Territorial and Territorial Units Day 2, October, 24 Established practices – Work Session 1 9
Matching Census with geocoded address mass Census dataset Aggregated by building Geocoded Address Collection Day 2, October, 24 Established practices – Work Session 1 10
Matching Census with geocoded address mass Census dataset Aggregated by building Match address Geocoded Address Collection Day 2, October, 24 Established practices – Work Session 1 10
Geocoded census buildings to address points Statistics aggregated by grids Matching Census with geocoded address mass Census dataset Aggregated by building Geocoded Address Collection Day 2, October, 24 Established practices – Work Session 1 10
Geocoded census buildings to address points Statistics aggregated by grids Matching Census with geocoded address mass Census dataset Aggregated by building Additional steps in Aggregation phase (Available census tracts geometries that are inside grid geometries) Geocoded Address Collection Geometries of census tracts Statistics aggregated by grids Day 2, October, 24 Established practices – Work Session 1 10
Geocoded census buildings to address points Statistics aggregated by grids Matching Census with geocoded address mass Census dataset Aggregated by building Additional steps in Aggregation phase (Available census tracts geometries that are inside grid geometries) Geocoded Address Collection Geometries of census tracts Statistics aggregated by grids Day 2, October, 24 Established practices – Work Session 1 10
Statistics aggregated by grids Result: Grid generated with Aggregation techniques Day 2, October, 24 Established practices – Work Session 1 10
Matching Census “objects” with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Matching Census “objects” with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Match objects Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Map features Disaggregatation Matching Census “objects” of “the objects” by grids with map feature of the “object” Census dataset Aggregated by “object” Localization Units Urban Atlas Binary Dasymetric (Populated Areas/Unpopulated Areas) Assuming uniform density inside the “object” Populated Areas of the settlements Day 2, October, 24 Established practices – Work Session 1 11
Result: Grid generated with Disaggregation technique Day 2, October, 24 Established practices – Work Session 1 11
Day 2, October, 24 Established practices – Work Session 1 12
Day 2, October, 24 Established practices – Work Session 1 12
Day 2, October, 24 Established practices – Work Session 1 13
Day 2, October, 24 Established practices – Work Session 1 13
SETTLEMENTS POPULATION METHODS COVERED DISTRIBUTED BY YHE METHOD BY THE METHOD Address Points + census tracts 569 AGREGATION Settlements Points 361 Localization Units Binary 3 Urban Atlas Binary 376 DISAGGREGATION Populated and Build-up Areas Binary 4562 Number of settlements by number of grid cells they cover Number of settlements Total Population of Bulgaria according Census 2011 1200 1100 1176 1000 900 800 700 600 651 618 500 579 559 557 509 400 300 303 200 225 100 142 0 1 2 3 4 5 6 7 8 9 10+ Grid cells Day 2, October, 24 Established practices – Work Session 1 14
Day 2, October, 24 Established practices – Work Session 1 15
Day 2, October, 24 Established practices – Work Session 1 16
Thank you for your attention! Mr. Arslan AHMEDOV Mrs. Irena DUDOVA E-mail: Idudova@nsi.bg E-mail: aahmedov@nsi.bg Day 2, October, 24 Established practices – Work Session 1 17
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