06/21/2012

Aggregations of spatial information for data dissemination
• SIG IBGE - the map server of the IBGE website
• New forms of dissemination of statistical data
• National Spatial Data Infrastructure

SIG IBGE - the map server of the IBGE website
The channel SIG IBGE Georeferenced Information
System enables users to handle spatial information, navigate on maps, search for and integrate information.
Among the available maps one can find:
• information about the 2010 Census
• biomes
• climates
• endangered fauna
• agricultural potential
• terrain
• soils
• vegetation
• localities and densities
• charts to the millionth scale
• geodesy
• geology

SIG IBGE

SIG IBGE -

SIG IBGE

SIG IBGE
The maps in the SIG IBGE channel are also available for visualization in the following formats:
• KMZ files, for visualization in Google Earth
• online ArcGIS gallery
• WMS - web mapping service
• webservice - use in other web pages
• download for use in GIS programs

New forms of dissemination
Previous situation:
• enumeration area as the smallest spatial unit area of interest intersection result

New forms of dissemination
Query by block face:
• confidentiality is maintained area of interest intersection result

New forms of dissemination
Applications of a query by block face:
• planning for the creation of teaching establishments
• study for the conduction of urban construction works
• environmental studies

New forms of dissemination
Statistical Grids:
• hierarchical spatial structures formed by regular cells and used to make aggregated data available
ID
DOM
POP
POP_H
POP_M
815959
23
85
32
53

New forms of dissemination
Statistical Grids:
• independence from political-administrative boundaries
 direct comparability
• no change over time
 direct comparability
• regular distribution
 computing efficiency
• hierarchical structure
 allows multi-scale analyses
• easily handled with GIS tools
• vector or raster data structure

New forms of dissemination
Statistical Grids - Case study:
• publicly available data from the 2007 Counting
• permanent private housing units (occupied and closed) in areas classified as rural - type 8
• population density obtained from the average number of residents per housing unit in the enumeration area
• different types of cells
• 37.5” x 37.5” ~ 1.1 Km
 1:2,000 scale
• 1’15” x 1’15” ~ 2.3 Km
 1:4,000 scae
• 2’30” x 2’30” ~ 4.6 Km
 1:8,000 scale
• Case - Pará

National Spatial Data Infrastructure
Panorama of geospatial information in Brazil:
• Produced/acquired and maintained by public institutions at every government level and by private organizations
• Users cannot find out:
 what is available
 where to find information
 who maintains the system
 how to access data

National Spatial Data Infrastructure
Solution:
• INDE was conceived as a solution towards the integrated management of geospatial data and as a means to release information needed in the decisionmaking process and in the support to social, economic and sustainable development http://www.inde.gov.br

National Spatial Data Infrastructure
• an integrated group of technologies, policies, mechanisms and procedures of management and monitoring, standards and agreements
• necessary to facilitate and organize the generation, storage, access, sharing, dissemination and use of geospatial data
USERS
Technology
Policies
Standards
GEOSPATIAL
DATA

National Spatial Data Infrastructure
Web model:
SIG Brazil
Geoportal
Searches for metadata; accesses and visualizes data
Makes data and metadata available
User Producer

www.ibge.gov.br