PostGeoOlap: an Open-Source Tool for Decision Support

Colonese, Giovanni; Manhães, Rodrigo Soares; González, Sahudy Montenegro; Carvalho, Rogério Atem de; Tanaka, Asterio Kiyoshi

doi:10.5753/sbsi.2005.14976

“…• Spatial measures and spatial dimensions (Rivest et al, 2005) • Avoiding multiple counting (i.e., considering the same fact twice) during the aggregation process . • Providing a mechanism to calculate materialized spatial views (Colonnese et al, 2005).…”

Section: Solap Toolsmentioning

confidence: 99%

A Web-Based Tool for Spatio-Multidimensional Analysis of Geographic and Complex Data

Bimonte¹

2010

International Journal of Agricultural and Environmental Information Systems

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Spatial OLAP (SOLAP) integrates spatial data into OLAP systems, and SOLAP models define spatial dimensions while measuring spatio-multidimensional operators. In this paper, the author presents the concepts of geographic and complex measures that allow integrating geographic and complex information as subjects of analysis in spatial data warehouses. The concept of geographic measure extends the concept of spatial measure to the semantic component of geographic information. The concept of complex measure allows introducing complex data as subjects of multidimensional analysis. To reduce the gap in flexibility between spatial and multidimensional analysis, this paper proposes a symmetrical representation of measures and dimensions. Additionally, the author presents a Web-based SOLAP prototype, GeWOlap, that enriches existing SOLAP tools by effectively and easily supporting symmetrical geographic/complex measures and dimensions for modeling and visualization. To validate this approach, the simulated environmental data concerning the pollution of the Venice lagoon is used.

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A Web-Based Tool for Spatio-Multidimensional Analysis of Geographic and Complex Data

Bimonte¹

New Technologies for Constructing Complex Agricultural and Environmental Systems

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Spatial OLAP (SOLAP) integrates spatial data into OLAP systems, and SOLAP models define spatial dimensions while measuring spatio-multidimensional operators. In this paper, the author presents the concepts of geographic and complex measures that allow integrating geographic and complex information as subjects of analysis in spatial data warehouses. The concept of geographic measure extends the concept of spatial measure to the semantic component of geographic information. The concept of complex measure allows introducing complex data as subjects of multidimensional analysis. To reduce the gap in flexibility between spatial and multidimensional analysis, this paper proposes a symmetrical representation of measures and dimensions. Additionally, the author presents a Web-based SOLAP prototype, GeWOlap, that enriches existing SOLAP tools by effectively and easily supporting symmetrical geographic/complex measures and dimensions for modeling and visualization. To validate this approach, the simulated environmental data concerning the pollution of the Venice lagoon is used.

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On Modeling and Analysis of Multidimensional Geographic Databases

Bimonte

¹

2013

Geographic Information Systems

2

0

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Data warehouse and OLAP systems are tools to support decision-making. Geographic information systems (GISs) allow memorizing, analyzing and visualizing geographic data. In order to exploit the complex nature of geographic data, a new kind of decision support system has been developed: spatial OLAP (SOLAP). Spatial OLAP redefines main OLAP concepts: dimension, measure and multidimensional operators. SOLAP systems integrate OLAP and GIS functionalities into a unique interactive and flexible framework. Several research tools have been proposed to explore and the analyze spatio-multidimensional databases. This chapter presents a panorama of SOLAP models and an analytical review of research SOLAP tools. Moreover, the authors describe their Web-based system: GeWOlap. GeWOlap is an OLAP-GIS integrated solution implementing drill and cut spatio-multidimensional operators, and it supports some new spatio-multidimensional operators which change dynamically the structure of the spatial hypercube thanks to spatial analysis operators.

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PostGeoOlap: an Open-Source Tool for Decision Support

Cited by 3 publications

References 4 publications

A Web-Based Tool for Spatio-Multidimensional Analysis of Geographic and Complex Data

A Web-Based Tool for Spatio-Multidimensional Analysis of Geographic and Complex Data

A Web-Based Tool for Spatio-Multidimensional Analysis of Geographic and Complex Data

On Modeling and Analysis of Multidimensional Geographic Databases

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