"GeoMondrian is an Open Source Spatial Online Analytical Processing Server, a spatially-enabled version of Pentaho Analysis Services (Mondrian). It has been released under the EPL.
GeoMondrian is the first
implementation of a true SOLAP server. It provides a consistent
integration of spatial objects into the OLAP data cube structure,
instead of fetching them from a separate spatial database, web service
or GIS file. To make a simple analogy, GeoMondrian
brings to the Mondrian OLAP server what PostGIS brings to the PostgreSQL
database management system. It implements a native geometry data type
and provides spatial extensions to the MDX query language, allowing
embedding spatial analysis capabilities into analytical queries.
These geospatial extensions to the MDX query language provide many more possibilities, such as:
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in-line geometry constructors
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member filters based on topological predicates
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spatial calculated members and measures
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calculations based on scalar attributes derived from spatial features
GeoMondrian only supports PostGIS based data warehouses."
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