Use of digital georeferenced bases from IBGE to produce thematic maps:A methodological contribution

Authors

  • Barbara -Christine Nentwig SILVA UCSAL
  • Araori Silva COELHO UFBA

Abstract

This paper aims to propose a survey of the digital cartographic bases, vectorized and georeferenced, available without costs in IBGE’s site in order to draw different thematic maps, using GIS technology. The digital basis covers all Brazil in different scales with political and administrative limits like Great Regions, States, Meso Regions, Micro Regions, Municipalities, Metropolitan Regions and urban and rural census areas. The digital bases are from 2001 but the bases from 1991 and 1994 are only available for Municipalities and from 1997, for Meso and Micro Regions and Municipalities. For Municipalities with more than 25.000 inhabitants in 1997, the network of the city’s census area is available, totalizing 1.058 cities in Brazil. From a methodological perspective, flow charts were drawn explaining how to capture and use digital networks in shape form whose polygons are related to IBGE’s code tables, essential for future data inputs As a result, several examples of this methodology applied in Thematic Cartography are shown with different levels of details. Finally, this paper discusses the potential and difficulties of each package offered by IBGE. Key words: Cartographic digital basis; Internet, IBGE.

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Published

2008-07-16

Issue

Vol. 31 No. 3 (2006)

Section

Article

License

The authors maintain the copyright and grant GEOGRAFIA the right of first publication, with the articles simultaneously licensed under the Creative Commons BY 4.0 License, which allows sharing and adapting the articles for any purpose, as long as appropriate credits and provisions of image rights, privacy or moral rights. Other legal attributions can be accessed at: https://creativecommons.org/licenses/by/4.0/legalcode.en.

 

Geography, Rio Claro, SP, Brazil - eISSN 1983-8700 is licensed under the Creative Commons BY 4.0 License.