A Model of Spatial Data Warehouses
Dimensions
- nonspatial
- (e.g. 25-30 degrees generalizes to hot)
- spatial-to-nonspatial
- (e.g. region “B.C.” generalizes to “western provinces”)
- spatial-to-spatial
- (e.g. region “Burnaby” generalizes to region “Lower Mainland”)
Measurements
- numerical
- distributive (e.g. count, sum)
- algebraic (e.g. average)
- holistic (e.g. median, rank)
- spatial
- collection of spatial pointers (e.g. pointers to all regions with 25-30 degrees in July)