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Terra Communis (tComm) : a free data provider for historical census micro-data

The growing availability of census micro-data - demographic data aggregated for small-areas, allows detailed analysis of the social structure of small neighbourhoods. Such exercises are in most cases static since census tracts geometries change between every census exercise. Using dasymmetric mapping techniques implemented within a spatially enabled PostgreSQL database, historical datasets were built for Portuguese census information, for the years 2001 and 2011. Information is freely made available using the Open Geospatial Consortium (OGC) Web Feature Service (WFS) Interface Standard. Geoserver is used to share data over the web and an interface is implemented using the JavaScript library OpenLayers. The innovative nature of tComm is three-folded: (1) for the first time, a large scale comprehensive time-space database is built for Portuguese census data; (2) the fact that data is made available online contributes to the goal of making knowledge symmetrically available; (3) the fact the only Free and Open Source Software (FOSS) is used means that, other than man-hours, the project is costs鈥檉ree

Universitat de Girona. Servei de Sistemes d鈥橧nformaci贸 Geogr脿fica i Teledetecci贸

Author: Rodrigues, A.M.
Neves, Bruno
Rebelo, Carla Roque
Date: 2013 March 7
Abstract: The growing availability of census micro-data - demographic data aggregated for small-areas, allows detailed analysis of the social structure of small neighbourhoods. Such exercises are in most cases static since census tracts geometries change between every census exercise. Using dasymmetric mapping techniques implemented within a spatially enabled PostgreSQL database, historical datasets were built for Portuguese census information, for the years 2001 and 2011. Information is freely made available using the Open Geospatial Consortium (OGC) Web Feature Service (WFS) Interface Standard. Geoserver is used to share data over the web and an interface is implemented using the JavaScript library OpenLayers. The innovative nature of tComm is three-folded: (1) for the first time, a large scale comprehensive time-space database is built for Portuguese census data; (2) the fact that data is made available online contributes to the goal of making knowledge symmetrically available; (3) the fact the only Free and Open Source Software (FOSS) is used means that, other than man-hours, the project is costs鈥檉ree
Format: application/pdf
Document access: http://hdl.handle.net/10256/7657
Language: eng
Publisher: Universitat de Girona. Servei de Sistemes d鈥橧nformaci贸 Geogr脿fica i Teledetecci贸
Collection: VII Jornadas de SIG Libre
Rights: Tots els drets reservats
Subject: Sistemes d鈥檌nformaci贸 geogr脿fica -- Congressos
Programari lliure -- Congressos
Geographic information systems -- Congresses
Open source software -- Congresses
Title: Terra Communis (tComm) : a free data provider for historical census micro-data
Type: info:eu-repo/semantics/conferenceObject
Repository: DUGiDocs

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