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Figure 3. Spatio-multidimensional models a) Spatial measure, b) Geographic measure
Spatial OLAP Tools: A Panorama
yet. Indeed, the following SOLAP research tools'
panorama reveals that spatial data mining tools,
spatial analysis methods and geovisualization
techniques should enrich spatio-multidimensional
operators.
Bédard et al., (2005) identify three typologies
of Spatial OLAP tools (OLAP dominant, GIS
dominant and OLAP-GIS integrated), according
to their OLAP and GIS functionalities. Some
prototypes have been implemented. They allow
an effective spatio-multidimensional analysis of
spatial data warehouses thanks to advanced OLAP
and GIS functionalities. However, an overall set
of mandatory functionalities has not been defined,
GIS Dominant Solutions
GIS dominant solutions simulate OLAP server
thanks to a relational database modelled using
the star or the snow-flake schema. As shown in
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