In Chapter 8, we discussed how to perform proximity analysis using a spatial index and associated spatial operators. In this chapter, we describe geometry processing functions, which are also referred to as spatial functions (whenever there is no ambiguity), that complement this functionality. In contrast to the spatial operators, these geometry processing functions
Do not require a spatial index
Provide more detailed analyses than the spatial operators associated with a spatial index
Can appear in the SELECT list (as well as the WHERE clause) of a SQL statement
KeywordsConvex Hull Geometric Object Branch Location Spatial Index Spatial Operator
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Ravi Kothuri, Albert Godfrind, Euro Beinat 2004