National Spatial Data Infrastructure
in Brazil
40th session of the United Nations Statistical Commission
Lunch Time Seminar
New York, Feb 25th, 2009
Contents
 Introduction
 Spatial Data Infrastructure – SDI
 SDI in other countries
 National Commission of Cartography (CONCAR)
 Presidential Decree
 IBGE Actions in Preparing Geospatial Data for NSDI
 Final remarks
Introduction (1/2)
The global demand for geospatial information: in an interconnected
world, geospatial information is essential in Many activities
Over 60% of all information
used by the public sector
around the world can be
georreferenced
Agriculture: Nutrient mapping
Manure
storage
GPS
sampling
points
watershed
GPS’ed site-specific sampling
Phosphorus Distribution
Nitrogen Distribution
Source: Rutgers Cooperative Extension
Introduction (2/2)
The fast evolving geotechnologies
Satellite Images
Aerial
Photography
Surveying
Location based
Technology
Maps
GPS
CAD/GIS
DTM
The trend: as geospatial data become increasingly available,
services will become more important to end users
This will apply to the geostatistical data as well
Brazilian Statistical Office
Example of Georreferenced Statistical data
Censuses 2007
Visually monitoring data collection
Collection seen with Google Earth®: The yellow line represents the
enumeration area boundaries. The yellow points represent points
georreferenced by GPS.
The red arrow indicates a selected unit for detailed viewing, shown on the
right-hand side figure. The corresponding data can be seen by clicking on the
point.
National Statistical Offices
What do we need to produce
Georreferenced Statistical data?
National Spatial Data Infrastructure - NSDI
Technological advances  redefinition of how to make
cartography  integrating data and information 
optimizing resources  attending the demands !!
Policies, laws, rules, standards, agreements, plans, programs,
projects, human, technological and financial resources,
appropriately integrated, to facilitate the production, access
and use of governmental geospatial data, on behalf of the
country's development.
Georreferenced Statistical data may be seen as
Geospatial data up to the consideration of the producer
NSDI Components
NSDI
POLICY
Institutional deals:
- Identifying roles and
data producers
- Elaborate data
sharing program
(GI)
DATA
- Definition of thematic
data (IG)
- Compatibilization
- Dissemination
STANDARDS
- Metadata
- Data exchange
LEGAL
- Legal marks
- Institutional mandate
- Legal and authoral
rights
- Rules and legislation
TECHNOLOGIC
- Protocols and
interfaces for
communication and
search
- Server networks
- Service (Geo)
HUMAN
RESOURCES
- Levelling
knowledge
-Technical and
managerial
Target: distributed GIS over the Internet, composed by data,
metadata and services
NSDI Services’ Architecture
Geoportal
Find
Publish
Client
Producer
Bind
Why NSDI?
Access and data sharing, Interoperability, Local management, Portability.
Build once, use many times!
Reference data
Thematic data
Security
Settlement
Transportation
Hidrography
Boundaries
Geodesic control
Altimetry/elevation
Imaging
Demography
Flooding areas
Logistic
Economic and
social actvities
Pedology
Natural resources
Environment
Geospatial information layers
Geodesy
Cartography
Natural
Research
Territorial
Boundaries
Geography
Statistics
National Spatial Infrastructure
Some Countries experiences
SDI Canada
SDI Colombia
SDI Europe
SDI Spain
Important aspects of NSDI, among others
• Standards for data, metadata, protocols, etc., in order to
guarantee interoperability between NSDI’s nodes
• Agreements between actors
• NSDI structure based on
• Government levels: Federal, State and Municipalities
• Thematic: environment, transportation, land security, water,
foods, education (schools and students), wealth (hospital and
health center), etc.
Brazil
Actions for building NSDI
National Register of Addresses
IBGE is preparing the National Register of Addresses for the 2010
Census, by using the Geospatial Information technology, to:
 Build a Georreferenced Address File
 Produce Georreferenced Statistical data
2010 Demographic Census
Linking of block faces to the
National Addresses File
using Geobase, software
developed by IBGE
Urban map
Quality improvement: urban and rural maps for 2010
Before
Integrated 2010 urban and rural
census maps
New ways of data dissemination
Basic units of
dissemination:
• enumerator
areas
New ways of
dissemination:
• Street
• Blocks
• Geometric areas
New technologies for 2007 and 2010 Censuses
Use of PDA equipped with GPS
 Quality control at the time of survey
 Real time monitoring of the collecting
data in all municipalities
 Georreferencing of rural
establishments (farms, schools,
health centers, etc.)
• Over 70,000 maps of census
enumeration areas converted to
SIRGAS2000
• In 2010 there will be over
280,000 census enumeration
areas
IBGE actions for building NSDI
IBGE is preparing the geospatial data to contribute to NSDI
 Update and converting to NCD/MND of continuous digital geospatial
data
 Compose a catalogue of satellite imagery with resolution between 2.5
and 100 m of the entire country
 IBGE exclusively distributes ALOS satellite images for noncommercial users in Brazil
Note: The census maps that will be prepared to the Census 2010,
with intensive use of satellite imagery,
will be a rich collection for the construction of SDI
ALOS Images
Orbital images from ALOS satellite
Porto Estrela - MT
From ALOS
Orbital images from Google Earth
Marechal Thaumaturgo - AC
From Google Earth
Orbital images from Quickbird satellite
Inserir imagem quickbird
Santo Antônio do Leverger, MS
From Quickbird
Geographic contribution to Census operations
Census Cycle
Pre-enumeration
Maps provide cartographic basis
for the delineation of
Enumeration Areas
Enumeration
Maps support data
collection, monitoring
Pre-Census
Census
Post-Census
Post-enumeration
Maps make it easier to analyze, display and
disseminate; also support survey projects during
the decade after the Census
Survey Samples
Rolling Census
Source: Digital Census Mapping Process: a conceptual framework and different implementation approaches
Final Remarks
• Integrating statistical data into NSDI opens new horizons, based on the
possibility of correlating this data with all other data layers, like the
ones related to natural resources, environment, education, health, etc.
• The new web based technologies allow NSO to produce Census
Mapping in a full digital way, integrating maps, enumeration areas
boundaries, graphic and text files, and addresses register
• The current availability of low cost high resolution orbital and aerial
imagery can help updating the Census Maps
• The NSOs efforts need to comply with NSDI, which is achievable by
following the SDI National Authority Standards – many of which should
adhere to the Open Geospatial Consortium standards; by doing this, all
geospatial information generated in Census Mapping can be made
available through the NSDI
Luiz Paulo Souto Fortes
Director of Geosciences of IBGE
luiz.fortes@ibge.gov.br
www.ibge.gov.br