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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "SpatialSearch" by GrantIngersoll
Date Fri, 11 Dec 2009 14:58:45 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for change notification.

The "SpatialSearch" page has been changed by GrantIngersoll.
http://wiki.apache.org/solr/SpatialSearch?action=diff&rev1=4&rev2=5

--------------------------------------------------

  
  Most of these items are being tracked on https://issues.apache.org/jira/browse/SOLR-773
and it's related issues.  The goal is to bring spatial search into Solr in such a way as to
leverage all of Solr's existing capabilities for distributed search, etc.
  
+ = An Example =
+ 
+ On https://issues.apache.org/jira/browse/SOLR-1131, the example schema was changed to provide
information about what store the products were located in.
+ 
+ The schema changes look like:
+ {{{
+ <fieldType name="location" class="solr.PointType" dimension="2" subFieldTypes="double"/>
+ 
+ <field name="store" type="location" indexed="true" stored="true"/>
+ }}}
+ 
+ In the example docs, for example: hd.xml, the document now has:
+ {{{
+ 
+   <field name="store">45.17614,-93.87341</field>
+ }}}
+ in addition to all the other fields.
+ 
+ Then, to query, the system can use the distance Functions in Solr, as in:
+ {{{
+ http://localhost:8983/solr/select/?q=_val_:"recip(dist(2, store, point(34.0232,-81.0664)),1,1,0)"&fl=*,score
+ }}}
+ 
  = Data Representation =
  
  One of the keys to data representation is the ability to represent points, etc. in multiple
different ways.  Some times, a user may want a [http://en.wikipedia.org/wiki/Geohash|Geohash]
and other times they may want Cartesian tiers or just simple lat/lon.

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