Regional Seminar on Dissemination and
Spatial Analysis of Census Data
GIS and Census Mapping - The
Cape Verde experience in the use of
GIS technologies in the 2010
Census
Presented by Leonilde Lima
Nairobi, Kenya, 14-17, September, 2010
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
Client
Browser
Internet
Web Server
Application Server
Server
Spatial Server
Data Source
2010 Census Mapping
- June 16 – 10, 2010
- Electronic
questionnaires - PDA
- “Everyone counts,
we count with
everyone”
Step 01-Digitalization of the 2000
Enumeration Areas and Buildings
Step 01-Digitalization of the 2000
Enumeration Areas and Buildings
GeoCode
5 1 2 001 0023
EA
Point/Building
Island
Freguesia
Concelho
Step 2 – Pre Census/Census
cartogtraphy preparation
Map Productions and Printing
PDA projects - 561 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
FICHA 1 – Descrição do limite do
DR………|0|0|1|
Ilha: Boavista |5|
Concelho: Boavista |5|1|
Freguesia: Santa Isabel|5|1|2
Descrição do limite do DR
Ponto inicial: Porto Sal-Rei
Do ponto inicial, Porto de Sal-Rei, percorre-se a estrada do porto até ao cruzamento com a
estrada Praia Cabral. Uma vez aqui vira-se à direita subindo a estrada e passando pelo
Father&Son Propriety Chegada ao topo vira-se à esquerda na Delegação do Ministério de
Educação seguindo em direcção à Igreja do Nazareno (Av. Dos Emigrantes) passando por
Extra carnes e vira-se à direita contornando a praceta (Rua de Caboco) seguindo em frente.
Depois atravessa uma rua e vira à direita na Botique Djena. Segue em frente passa pelo Bar
Silva, vira à esquerda na primeira rua, passando pelo Bar Marítimo, Rua da Cruz, Rua Santa
Bárbara e vira-se à direita (Av. Dos pescadores) até à orla marítima contornando a orla até ao
ponto inicial (Porto de Sal-Rei).
Bairro: Riba D’Olte
Feito por: Maria Sapinho Pires
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 1:10 000 rural level
– Satellite Imagery – Google earth
– Others institutions
Census History - Dissemination
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 results
Paper
Final results
Paper / internet / CD
Results by smallest
geographic unit
Posters, brochures, etc.
Analytical and thematic
statistical reports
Customized data requests
Paper / CD
Paper
Paper / Internet
Internet / INE
2010 - 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.
Objective
Promote statistical literacy, data awareness
and usefulness, as a basic support
instrument for the formulations and
decisions on public policies and private
businesses.
Dissemination via Web
• 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, …
Dissemination via Web
• 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
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
llima@ine.gov.cv - leonildelima@yahoo.com