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From leevduhl <ld...@corp.realcomp.com>
Subject Solr and Polygon/Radius based spatial searches
Date Mon, 03 Feb 2014 18:59:26 GMT
We have a public property search site that we are looking to replace the back
end index server on and we are looking at Solr as a possible replacement
(ElasticSearch is another possibility).

One of the key search components of out site is to search on a bounding box
(rectangle), custom multi-point polygon, and/or a radius from a point.

It appears that Solr3 and Solr4 both supported spatial searching, but using
different methods.  Also, per this link,
http://wiki.apache.org/solr/SolrAdaptersForLuceneSpatial4, it appears that
Solr only supports point, rectangle and circle shapes and needs JTS and/or
WKT to support multi-point non non rectangular polygon shapes.

Our indexed data will included the long/lat values for all property records.

If someone can provide sample queries for the following situations, it would
be appreciated:
- All properties/points that fall within a multi-point polygon (ie: Polygon
points: Lo1 La1, Lo2 La2, Lo3 La3, Lo4 La4, Lo5 La5, Lo1, La1)

- All properties that fall within 1.5 miles (radius) of point: Lo1 La1

Other spatial search type functionality that may be targeted included:
- Ability to search within multiple polygons (both intersecting, non
intersecting and combinations
- Ability to search for properties that fall outside of a polygon

Thanks 
Lee



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