06/21/2012
DESCRIPTION
Aggregations of spatial information for data dissemination. 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. - PowerPoint PPT PresentationTRANSCRIPT
06/21/2012
Aggregations of spatial information for data dissemination
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 websiteThe 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 - information about the 2010 CENSUS
SIG IBGE
SIG IBGEThe 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
Previous situation:•enumeration area as the smallest spatial unit
area of interest
intersection result
New forms of dissemination
area of interest
intersection result
New forms of dissemination
Query by block face:•confidentiality is maintained
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
ID 815959
DOM 23
POP 85
POP_H 32
POP_M 53
New forms of dissemination
Statistical Grids:•hierarchical spatial structures formed by regular cells and used to make aggregated data available
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 availablewhere to find informationwho maintains the systemhow 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 decision-making 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 GEOSPATIAL DATA
Technology
Policies
Standards
National Spatial Data Infrastructure
Web model:
SIG Brazil
Geoportal
User Producer
Searches for metadata; accesses
and visualizes
data
Makes data and metadata available
www.ibge.gov.br