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Integration of GPS, Digital Imagery and GIS with Census Mapping Expert Group Meeting to Review Critical Issues Relevant to the Planning of the 2010 Round.

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Presentation on theme: "Integration of GPS, Digital Imagery and GIS with Census Mapping Expert Group Meeting to Review Critical Issues Relevant to the Planning of the 2010 Round."— Presentation transcript:

1 Integration of GPS, Digital Imagery and GIS with Census Mapping Expert Group Meeting to Review Critical Issues Relevant to the Planning of the 2010 Round of Population and Housing Censuses 15-17 September 2004 New York United Nations Statistics Division

2 Integration of GPS, Digital Imagery and GIS with Census Mapping GIS, GPS, Digital Imagery: More integratedGIS, GPS, Digital Imagery: More integrated Census mapping operations: A geographic information processCensus mapping operations: A geographic information process Paradigm shift: Towards a digital census mapping approachParadigm shift: Towards a digital census mapping approach Current and future actions to promote digital census mapping approachCurrent and future actions to promote digital census mapping approach

3 Recent Technological Developments Recent Technological Developments GPS: Greater accuracy, reduced cost, waypoints displayed real-time in a GIS software; Satellite Imagery: Higher resolution, positional accuracy, 3-day revisit frequency, and GIS-readiness; Mobile GIS: Capture, manipulate, analyze and visualize data in the field in real time; Combination with DV: Better integration.

4 Geographic Information Process Three stages: Data AcquisitionData Acquisition Data managementData management Data disseminationData dissemination

5 Geographic Information Process (illustration) GPS Remote Sensing Aerial Photography Maps Census & Surveys GDB Surveying. GIS Acquisition Management Dissemination

6 Census Process Census (Enumeration: maps support data collection, monitor) Post-Census (Post-enumeration: analyze, display and disseminate) Pre-Census (Pre-enumeration: maps ensure consistency, prepare)

7 GIS with Census mapping at all stages EAs Units Administrative and Reporting Units GPS Photo/Video GIS Digital Mapping Satellite Imagery Pre-census Census Post-Census GIS Digital Mapping GIS Internet ( Map-Server ) (Pre-enumeration)(Enumeration)(Post-enumeration)

8 Geo-coding System A unique code needs to be assigned to each EA example: 02 025 0115 0033 Province: 2 digits District: 3 digits Locality: 4 digits EA: 4 digits This Code: a natural link between GIS boundaries (geographic coordinates) and tabular census data  Geo-code Coding system: well structured, flexible  Geo-coding System

9 Digital Census Mapping Process vs Traditional Census Mapping Process Digital Census Mapping Approch: common sense!Digital Census Mapping Approch: common sense! Paradigm Shift:Paradigm Shift: Up-to-date ApproachUp-to-date Approach Continuous Mapping ProcessContinuous Mapping Process Implications: reconsider the way to conduct censuses (periodicity of census, frequency of inter-censal surveys, coverage, etc.)Implications: reconsider the way to conduct censuses (periodicity of census, frequency of inter-censal surveys, coverage, etc.)

10 Some Actions undertaken by the UNSD Handbook on GIS and Digital Mapping, 2000Handbook on GIS and Digital Mapping, 2000 Training Workshop for SADC and CIS regionsTraining Workshop for SADC and CIS regions Advisory missionsAdvisory missions ESRI Donation: commercial ArcView 3.3 to 40 countriesESRI Donation: commercial ArcView 3.3 to 40 countries

11 Suggested Actions Statistical Map ServerStatistical Map Server International Conference: “Integration of Geospatial Technologies with Census Mapping for Better Decisions” (Resolutions)International Conference: “Integration of Geospatial Technologies with Census Mapping for Better Decisions” (Resolutions) Guidelines to establish a Permanent Cartography & Geographic Information Unit within NSOGuidelines to establish a Permanent Cartography & Geographic Information Unit within NSO Establishment of a Group of ExpertsEstablishment of a Group of Experts

12 Thought of the day: GIS, GPS and Remote Sensing bring sense to censuses!


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