Slide 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 Slide 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 Slide 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 Slide 4 Census Mapping- Pre-Enumeration Stage - Used Satellite images Slide 5 Census Mapping- Pre-Enumeration Stage - Used Digital maps Slide 6 Census Mapping- Pre Enumeration Stage - Used Digitized GN division Boundaries in 2001 census Slide 7 Census Mapping- Pre-Enumeration Stage - Used GPS in census mapping Slide 8 Census Mapping- Pre-Enumeration Stage -prepared GN Division Map(2011) Slide 9 Small Area Statistics by Census Blocks (CBs) - MRCB 9 Slide 10 MRCB Data Base Slide 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) 110120912523220706 10001 98660 Slide 12 Census Mapping- Pre Enumeration Stage -Prepared Census Block Map(2011) Slide 13 Sri Lanka Provinces (9) Districts (25) Divisional Secretariat Divisions (330) GNDs (14,022) I llustration of nested Administration Hierarchy of sri Lanaka Census Blocks (65,012) Slide 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) Slide 15 Population and pop- density Patterns by Districts-2001 Slide 16 Population and pop- Density Patterns by DS Divisions-2001 Slide 17 District Level Population By sector wise and Ethnic grups-2001 Legend Urban Rural Estate Slide 18 18 Population density Patterns of colombo District-2001 Slide 19 Analysis using Thematic Maps- Ranking DS Divisions by Poverty -2006 Slide 20 Analysis using Thematic Maps -Classification of GN Divisions by Selected Unsatisfied Basic Needs(UBN): 2007 Slide 21 Analysis using Thematic Maps-Tsunami Mapping Slide 22 Thematic Mapping- Data Dissemination through Web Slide 23 Spatial Analysis - Multiple Buffers Slide 24 Spatial Analysis Use of GIS for Site Selection -Selection of Lands for Construct Southern Highway Slide 25 Thank You