Currently it defines generic interfaces, provides simple main memory and
disk based storage managers and a robust implementation of an R*-tree, an
MVR-tree and a TPR-tree.
Supported Features:
* Generic main memory and disk based storage managers.
* R*-tree index (also supports linear and quadratic splitting).
* MVR-tree index (a.k.a. PPR-tree).
* TPR-tree index.
* Advanced query capabilities, using Strategy and Visitor patterns.
* Arbitrary shaped range queries, by defining generic geometry interfaces.
* Large parameterization capabilities, including dimensionality,
fill factor, node capacity, etc.
* STR packing / bulk loading.
WWW: http://trac.gispython.org/projects/SpatialIndex/wiki
PR: ports/124628
Submitted by: Wen Heping <wenheping at gmail.com>
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