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From Guido Medina <>
Subject Solr spatial clustering GPS
Date Wed, 29 Jan 2014 15:38:52 GMT

Is there a way to cluster groups of near by GPS in a Solr query(GPS 
inside a quadrant), we have everything in place (location_rpt with 
Spatial4J and JTS) and we have been using Solr spatial for a while with 
GPS and Polygons in the map, just wondering if there is a way to return 
a list of cluster of points depending on the quadrant and some sort of 

If that is not possible, is there a way to return the geo-hashes instead 
of the original value, let's say, a GPS lon lat in WKT format is (1 1) 
and its geo-hash is AAAA, so instead of returning (1 1) I want to get 
its hash so that we can use a custom text algorithms to cluster.

Any response/thoughts will be appreciated,


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