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Spatial Index for Plone
SpatialIndex is a specialized, local spatial index for Plone folders. The index is persisted in the filesystem alongside the ZODB. Also provided is a handler for content georeferencing events.
At the 2006 Plone Conference, Shaun Walbridge and Sean Gillies wrote a quadtree-based index for Plone. Its usefulness was undercut by lack of persistence. Howard Butler solved the persistence problem, and subsequent work has now been incorporated into a spatial index that may be useful in Plone sites. The Plone product SpatialIndex depends on Python Rtree (0.2) and Shapely (1.0a), and on PleiadesGeocoder 1.0a1.
- http://trac.gispython.org/projects/PCL/wiki/ArrTree
- http://trac.gispython.org/projects/PCL/browser/Rtree/trunk/README.txt
- http://trac.gispython.org/projects/PCL/wiki/Shapely
- http://trac.gispython.org/projects/PCL/browser/Shapely/trunk/README.txt
- http://icon.stoa.org/trac/pleiades/wiki/PleiadesGeocoder
You can get PleiadesGeocoder 1.0a1 and SpatialIndex 1.0a1 from:
- $ svn co http://icon.stoa.org/svn/pleiades/PleiadesGeocoder/tags/rel-1.0a1
- $ svn co http://svn.gispython.org/svn/primagis/SpatialIndex/tags/rel-1.0a1
Please see http://trac.gispython.org/projects/PrimaGIS/browser/SpatialIndex/trunk/README.txt for details.
Read more about this release at:
- http://zcologia.com/news/595/plone-r-tree-spatial-index/
- http://horothesia.blogspot.com/2007/10/plone-r-tree-spatial-index.html
Sean's participation in this work was funded by our grant from the National Endowment for the Humanities.