Ruben Jorge, July 2009

SOLAP+: Extending the Interaction Model, João Moura Pires (superv.), Universidade Nova de Lisboa, July 2009.

Keywords: OLAP, SOLAP, GIS

Abstract: Decision Support Systems (DSS) are designed in order to help human users with decision making activities. Inside the big family of DSSs there is OnLine Analytical Processing (OLAP) – an approach to answer multidimensional queries quickly and effectively. Even though OLAP is recognised as an efficient technique and widely used in mostly every area, it does not offer spatial analysis, spatial data visualisation nor exploration. In order to explore this potential and include spatial data and spatial analysis features to OLAP, Bédard introduced Spatial OLAP (SOLAP). Although it is a relatively new area, many proposals towards SOLAP’s standardisation and consolidation have been made, as well as functional tools for different application areas.We propose to define a generic model for SOLAP interaction based on previous works, extending it to include new visualisation options, components and cases.


SOLAP+ Videos by Ruben Jorge
These videos show a few demos of SOLAP+ prototype. Initially, in Solap 1, it is presented the multidimensional model of Pollutant Emissions in Portugal. It is also made a simple query to show the three fundamentals components: (i) map; (ii) support table; (iii) detail table. Throughout this video it is presented basic features such configurable interface, save and load session and how to use the map control panel. In Solap 2 video, it is explained the support table and the map behavior, allowing you understand how the 1:1 relationship is always maintained between the support table and the map. In Solap 3 video, it is shown the spatial slice, the semantic slice and the filtering by a numerical measure. In Solap 4 video, an analysis with two spatial attributes from the same spatial dimension is shown.


Solap1.m4v – basic features of the solap plus system.

Solap2.m4v – The 1:1 relationship between the support table and the map.

Solap3.m4v – Show the three possible ways to slice data during an analysis.

Solap4.m4v – Analysis with two spatial attributes from same spatial dimension.