Transcript Use of technology tools in census data dissemination

Use of technology tools in census
data dissemination
in the Central Bureau of Statistics
(CBS), Namibia
By
Mr. Jackie !Noabeb
Senior Analyst Programmer
Email: [email protected]
Tel: +264 61 283 4074
Data Collection
• GIS is used to capture locations and structures around the country.
• This is done by field workers going into the different regions of the
country with GPS enabled PDA’s.
• The captured data is then verified using two tools called Geomedia
and ArcGIS.
• The data is then stored in a GIS Database, after which a verified
Dwelling Unit Frame is created. This is then followed by the
demarcation of EA’s.
• Once the Dwelling Frame is in place, a EA maps are produced.
• EA maps ensure that the enumerators have more accurate
information about structures and locations. This information is
stored in a national GIS database called GSurveyNam.
• Census Enumerators then capture data on paper.
Data Processing
• The captured data is then scanned into a
database using Optical Character Recognition
software called Eyes & Hands.
• Once the data is captured in a database, it
goes through two verification processes
before a final Census database is created.
• The final census database is then integrated
into a national database called NAMSTAT.
NAMSTAT
• NAMSTAT acronym for NAMibia STATistics is a
database that integrates Census and other
survey data for Namibia. Namibia has two
major surveys every five years and census
every ten years:
•
Census
Database
+
NHIES
Database
+
NIDS
Database
=
NAMSTAT
Database
Methods of dissemination
National Databases
NAMSTAT
Database
GSurveyNAM
Database
All statistics information is contained in the NAMSTAT
database and all Namibian GIS data is contained in the
GSurveyNAM database. These national databases are the
two primary sources from which data is disseminated.
The databases are created using Microsoft SQL Server 2008.
Web
• Website created using open source
technologies such as PHP & PostgresSql
• Dynamic since it uses both the NAMSTAT and
Geo-database to extract and display the latest
GIS and statistics information.
NAMSTAT
Database
CBS Website
Web…cont’d
• Download page –
economic,trade,demographic and shapefiles
• RSS,Discussion Forum
• Geo-portal for metadata exchange using
Geonetworks. Geonetworks technology links
users to location of datasets. Also allows for
shapefiles to be donwloaded.
• NamInfo Database will also be located on the
website.
WebGIS
• Uses MapGuideOpenSource and MapGuide Studio 2008 .
• Enables users to produce a variety of maps using the available
shapefiles.
WebGIS is updated regularly by our regional offices thereby ensuring
that our GIS maps are up to date.
WebGIS
Regional Offices are equipped with tools such as
Geomedia,SPSS and SuperCross to produce
GIS maps and Census data on request.
End of Presentation
Thank you for your attention