GIS and Census Mapping - The Cape Verde experience in the use of GIS technologies in the 2010 Census Nairobi, Kenya, 14-17, September, 2010 Regional Seminar on Dissemination and Spatial Analysis of Census Data Presented by Leonilde Lima

Summary INE - GIS Infrastructure –2010 Census Mapping –Dissemination Dissemination Strategy Objectives –Web Dissemination Objectives Products Services Users Data Contents

GIS Infrastructure Support the production and the dissemination of data. Statistics Production: –Geo referencing all statistical information; –Map Supply Dissemination: –Include the geographical component in all dissemination products Studies –Using spatial analysis tools

Technology Data Source Browser Web Server Application Server Spatial Server Internet Server Client

2010 Census Mapping - June 16 – 10, Electronic questionnaires - PDA - “Everyone counts, we count with everyone”

Step 01-Digitalization of the 2000 Enumeration Areas and Buildings

GeoCode Island Concelho Freguesia EA Point/Building

Step 2 – Pre Census/Census cartogtraphy preparation Map Productions and Printing PDA projects Enumeration areas (2000 boundaries) Image EA boundary Buildings

Step 03 - Census Cartographic database Correction and stabilization –Not valid points, –Inconsistent limits, Urbanization …

Step 04- Delimitation of the 2010 enumeration areas 150 / 180 households for urban / rural areas

Step 05- Field confirmation and DR boundary descriptions

Step 06 – Pilot census and Census preparation Map Productions and Printing PDA projects – 949 Enumerations Areas (2010 boundaries) –New Images –New EA limits –New buildings

Step 07- Census geographic database Correction and stabilization –December 2010 Step 08 – Map Dissemination (Static) - June 2011 Step 09 – SIG INE (Dinamic) - December 2011

Ressources Softwares – Geobase –Arcview –ArcGis –Global Mapper –IBGE Mobile GIS

Ressources Hardware –PC’s –1 Plotter –3 - A3 Printers –PDA’s

Ressources Liveware / People –8 technicians (Geography, Cartography, Statistics, Technology). –Computer operators –Field operations staff

Ressources Others –Aerial photography – Municipalities 1:2000 urban level 1: rural level –Satellite Imagery – Google earth –Others institutions

The dissemination of the 2000 census results, had been limited to tables and reports. Product/Service Format in which product/service available Press release Tabulated data Preliminary resultsPaper Final resultsPaper / internet / CD Results by smallest geographic unit Paper / CD Posters, brochures, etc.Paper Analytical and thematic statistical reports Paper / Internet Customized data requestsInternet / INE Census History - Dissemination

Dissemination Strategy Good practices from 2000 (CD, paper, ateliers, folders, reports,…) Easy the access to information –Free access to all census data, including geographic data Make the internet the core dissemination vehicle Enable advanced users to directly handle the information.

Promote statistical literacy, data awareness and usefulness, as a basic support instrument for the formulations and decisions on public policies and private businesses. Objective

Target –Advanced users GIS Specialists –Active Users Others specialists with knowhow in GIS –Ordinary Users Dissemination via Web

Products –Static Information Thematic maps Census Atlas … –Format PDF, GIF, JPEG, …

Products –interactive Information online map Production online Atlas Dissemination via Web

Contents –Detail level – The lowest possible having into account confidentiality issues Administrative Division –Country –Island - Ilha –Concelho –Freguesia –Cidade/Vila/Zona –Bairro / Lugar Dissemination via Web

Territorial's units Statistics divisions –EA’s Basic mapping data –Public utilities –Roads Others –Agricultural regions –Touristics zones

Tools Census Info Alov Map Redatam / IMIS CSpro PC Axis / PX Map Customized ArcGIS/ArcServer

Thank you! Leonilde Lima -