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UN workshop for South Asian countries on collection & dissemination of socio-economic data from population & housing censuses New Delhi,28-31 may 2012.

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Presentation on theme: "UN workshop for South Asian countries on collection & dissemination of socio-economic data from population & housing censuses New Delhi,28-31 may 2012."— Presentation transcript:

1 UN workshop for South Asian countries on collection & dissemination of socio-economic data from population & housing censuses New Delhi,28-31 may 2012 Janaka Rajapaksha Department of Census and Statistics(DCS) Sri Lanka Use of GIS Mapping & Spatial Analysis Country Presentation – Sri Lanka

2 Outline  Census Mapping -Pre Enumeration Stage-Preparation of based maps - Enumeration -Post Enumeration  Data Dissemination using Thematic maps  Data Dissemination through Web-using maps  Spatial Analysis 2

3  Census Mapping- Pre Enumeration Stage Technologies Used for preparing base maps in 2010 Round Census - Use GIS related software(Arc map/Arc info) - Satellite images - Digital maps - GPS Equipments - GPS Pints were taken for unclear boundaries - Digitized GN division Boundaries in 2001 census

4  Census Mapping- Pre-Enumeration Stage - Used Satellite images

5  Census Mapping- Pre-Enumeration Stage - Used Digital maps

6  Census Mapping- Pre Enumeration Stage - Used Digitized GN division Boundaries in 2001 census

7  Census Mapping- Pre-Enumeration Stage - Used GPS in census mapping

8  Census Mapping- Pre-Enumeration Stage -prepared GN Division Map(2011)

9 Small Area Statistics by Census Blocks (CBs) - MRCB 9

10 MRCB Data Base

11 Enumeration Area Coding 2001 A1 : Province & District: (2) A2: Polling Division(3) A3: DS Division:(2) A4: GN Division(3) A5: Sector(U/R/E)(1) A6: MC/UC/PS:(2) A7: Ward/Village/Estate:(3) Census Block No: (2) 2011 A0: (5)

12  Census Mapping- Pre Enumeration Stage -Prepared Census Block Map(2011)

13 Sri Lanka Provinces (9) Districts (25) Divisional Secretariat Divisions (330) GND’s (14,022) I llustration of nested Administration Hierarchy of sri Lanaka Census Blocks (65,012)

14 Modes of Data Dissemination Printing : Departmental Publications Electronic Media (CD ROMs and DVDs) Census Info/ Dev info Internet : Web site  Static web pages (html, PDF, excel)  Interactive online tools (tabulating/graphing/mapping tools, etc) Census Info Geographic information systems (GIS)

15 Population and pop- density Patterns by Districts-2001

16 Population and pop- Density Patterns by DS Divisions-2001

17 District Level Population By sector wise and Ethnic grups-2001 Legend Urban Rural Estate

18 18 Population density Patterns of colombo District-2001

19 Analysis using Thematic Maps- Ranking DS Divisions by Poverty -2006

20 Analysis using Thematic Maps -Classification of GN Divisions by Selected Unsatisfied Basic Needs(UBN): 2007

21  Analysis using Thematic Maps-Tsunami Mapping

22  Thematic Mapping- Data Dissemination through Web

23  Spatial Analysis - Multiple Buffers

24  Spatial Analysis – Use of GIS for Site Selection -Selection of Lands for Construct Southern Highway

25 Thank You


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