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Spatial Analysis of Statistics - Answering Where & How!

This overview discusses the spatial analysis techniques and processes used to transform data into information and answer questions about population distribution, growth, trends, and patterns using maps, tables, and other visual representations. It also highlights the importance of proper geo-referencing and coding of data units for accurate analysis. Examples from the Qatar Census 2010 are used to demonstrate the application of spatial analysis in answering both "how much" and "how much is where" questions.

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Spatial Analysis of Statistics - Answering Where & How!

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  1. Spatial Analysis of Statistics(with Special Reference to Qatar Census 2010) State of Qatar

  2. Spatial Analysis of Statistics Overview • Spatial Analysis of Statistics- Answering Where & How! • Spatial Analysis Techniques- Processes & Methods • Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Disseminating Spatially Analyzed Statistics- Printed, Digital and through Web Applications

  3. Spatial Analysis of Statistics- Answering Where & How!

  4. Spatial Analysis of Statistics -Answering Where & How! • Data Users are often not only interested in answering the- • “How much” question, but • “How much is Where” question • Spatial (Geographic) Analysis of Statistics- • Transforms Data into Information, and • Presents results to the users in a concise and easy to understand manner For Example- Population Distribution representation through Maps

  5. Spatial Analysis of Statistics-Answering Where & How! • Population Distribution (By Census Blocks) Maps Tables

  6. Spatial Analysis of Statistics-Answering Where & How! Maps • Population Growth 1986- 2010 Tables

  7. Spatial Analysis Techniques- Processes & Methods

  8. Spatial Analysis Techniques- Processes & Methods • Requires Geo-referencing & Coding of Data Units- • Spatial Analysis of Census Data requires proper Geo-referencing and Coding of Data Units for collection and representation of Data. • This is to be done at the time of Census Operations and a Census Geography Database is to be created, e.g., Qatar Census Geography

  9. Spatial Analysis Techniques- Processes & Methods- Census Geography Qatar Three Tier Administrative/ Census Data Unit Hierarchy 2010

  10. QATAR MUNICIPALITIES 7 ZONES (QARS) 90 CENSUS BLOCKS 4345 PLOTS (QARS) 150,000 Spatial Analysis Techniques- Processes & Methods- Census Geography contd.. • Qatar Census Geography- Census Data Unit Hierarchy 2010

  11. Spatial Analysis Techniques- Processes & Methods- Census Geography contd.. • Census Data Aggregation & Dissemination Units • Census Data Aggregated to Agency Specific Spatial Data Units

  12. Spatial Analysis Techniques-Processes & Methods- Census GIS Database • Zone Level- Census GIS Database

  13. Spatial Analysis Techniques Processes & Methods- Census GIS Database contd.. • Census Block Level- Census GIS Database

  14. Thematic Mapping-Spatial & Temporal Common Choropleths- Color Maps Advanced Dasymetric Mapping- using geographic layers such as Land use Volumetric Mapping- Estimating and Representing Statistics at small Data Units level for which Census data is not made available- e.g., for Buildings falling with in a Census Block Queries- Where & How and sometime answering Why! Transformation- Buffering- Point, Line & Polygon Spatial Analysis Techniques Processes & Methods- Some Prevalent Forms useful with Population data

  15. Contd.. Spatial Interpolation- method designed to fill in values that lie between observations (Samples). The type of analysis include- Kriging- estimate the values of unsampled sites- Thiessen polygons- assumes that the values of the unsampled data are equivalent to those of the sampled points. Centre of Population- used to display the center of population using the weighted average of x and y coordinates of populated points Cluster analysis- regards the distribution of points in space irrespective of their actual locations to determine whether patterns are random, clustered, or dispersed Hot Spots- are where high values are surrounded by high values, or cold spots, where low values are surrounded by low values. Spatial Analysis Techniques Processes & Methods- Some Prevalent Forms useful with Population data

  16. Spatial Analysis Techniques & Methods- Thematic Mapping- Spatial Table Map

  17. Table 2010 Maps for Census Years 2004 1997 1986 • Darker the Shades Higher the Concentration of Population Spatial Analysis Techniques & Methods- Transforming Mapping- Spatial & Temporal

  18. Spatial Analysis Techniques & Methods- Thematic Mapping- 2D & 3D Mapping • 2D & 3D Representation of Census 2010 Population Data • Zone 22 & 23- (Data by Census Blocks 2010) 3D

  19. Dasymetric Mapping Spatial Analysis Techniques & Methods- Dasymetric Mapping Before After 19

  20. Spatial Analysis Techniques & Methods- Volumetric Mapping • Volumetric Mapping Population Data by Census Blocks Estimated Population Data by Buildings 20

  21. Census Blocks with Large Labor Gatherings- Census 2010 Spatial Analysis Techniques & Methods- Query

  22. Zones Recording more than 200 % Growth in Population during 2004- 2010 Spatial Analysis Techniques & Methods- Query

  23. Changing Concentration of Qatari Population in 25 Years Spatial Analysis Techniques & Methods- Trends & Patterns

  24. Spatial Analysis Techniques & Methods- Trends & Patterns • ThemeRepresentation- Changing Population Concentration (1986- 2010)

  25. Population Characteristics of a Defined Area- e.g., within 3 Km distance Spatial Analysis Techniques & Methods- Transformation- Buffering Point Buffer surrounding Al khore Health Centre Line Buffer along the Al Shamal Road

  26. Method designed to fill in values that lie between observations (Samples). Spatial Analysis Techniques & Methods- Spatial Interpolation Cluster Analysis Hotspot Analysis

  27. Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  28. Data Retrieval for User Specified Areas- Spatial Analysis of Census 2010 Results- Examples from QSA Data Users ASGHAL (Sewage Catchment- Project Areas)

  29. Data Retrieval for User Specified Areas- Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • ASGHAL- Roads Project Area (Concept Design of Furuasia, Huwar & Khafji Streets- KEO consultants) Project Area- ( Request for Data) Project Area- ( Geo-referencing)

  30. Data Retrieval for User Specified Areas- Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • ASGHAL- Roads Project Area (Concept Design of Furuasia, Huwar & Khafji Streets- KEO consultants) • Census Data Units overlaid and intersected for Data Aggregation

  31. Data Retrieval for User Specified Areas- Spatial Analysis of Census 2010 Results- Examples from QSA Data Users MOI- Capitol Police Areas

  32. Thematic Mapping- User Request Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Census 2010 Population as Calculated by KAHARMA Water Meter Districts

  33. Thematic Mapping- Census 2010 Results Publications Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  34. Thematic Mapping- Census 2010 Results- Publications Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  35. Combining Census Information with Geographic Layers for Planning & Analysis Administrative Boundaries- Urban Planning (LIC) Topographic - CGIS Census Boundaries - QSA Ortho & Satellite Images – CGIS Maps for Planning &Analysis Road Network- PWA (Asghal) Landmarks – CGIS Utilities Network- Kahrama/ Qtel Geographic Names – CGIS Land Parcel & Streets- Urban Planning (LIC-UPDA) QP Admin Areas- Qatar Petroleum Amenities- Education/Health Ministry Farms- Agriculture (Environment Ministry) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  36. Combining Census Information with Geographic Layers for Planning & Analysis Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  37. Buffering- Point (Landmark) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users Two Proposed Mall Sites • Census 2010 Data Request from Shopping Malls in Qatar • Buffers of 3, 5 and 10 Km surrounding the Location

  38. Buffering- Point (Landmark) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Census 2010 Data Request from Shopping Malls in Qatar • Zone and Census 2010 Boundaries Overlaid and Intersected

  39. Buffering- Point (Landmark) Site Selection – Two Proposed Shopping Mall Sites in Qatar Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Attribute data Joined to Census Block Layers using the Key Field- BLOCKCODE

  40. Buffering- Point (Landmark) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Attribute data further Processed and Summary Tables Generated-

  41. Buffering- Line (Road) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • MOI Request for Census 2010 Data- • Demographic Characteristics along Shamal Road within 1, 3 and 5 Km Distance

  42. Buffering- Line (Road) Spatial Analysis of Census 2010 Results- Examples from QSA Data Users • Demographic Characteristics along Shamal Road within 1, 3 and 5 Km Distance • Summary Data Tables

  43. Queries& Analysis- through GIS Web Applications Spatial Analysis of Census 2010 Results- Examples from QSA Data Users

  44. Disseminating Spatially Analyzed Statistics- Printed, Digital and through Web Applications

  45. Thematic Maps in Printed form in Reports, Books and Atlases Disseminating Spatially Analyzed Statistics- Printed, Digital and Web Applications • Theme Representation- Atlases & Thematic Maps (Printed & Digital)

  46. Atlases – Digital (Interactive) and Printed Disseminating Spatially Analyzed Statistics- Printed, Digital and Web Applications Qatar Census 2004 Qatar Census 1997

  47. Atlases – Digital (Interactive) and Printed-A2size QATAR ATLAS 2010 Under Preparation Disseminating Spatially Analyzed Statistics- Printed, Digital and Web Applications Qatar Census 2010 (About 200 Thematic Maps & Charts with Data & Notes) Themes (From 1986- 2010) • Administrative • Settlement • Housing & Households • Infrastructure • Population • Agriculture, Economy & Trade

  48. GIS Web Applications- e.g., Geo-Statistics Application by QSA GIS (www.qsa.gov.qa/gsa/DEMO/welcome.html Disseminating Spatially Analyzed Statistics- Printed, Digital and Web Applications

  49. GIS Web Applications- e.g., Geo-Statistics Application by QSA GIS Disseminating Spatially Analyzed Statistics- Printed, Digital and Web Applications

  50. Thank You!

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