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https://issues.apache.org/jira/browse/SOLR-1568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12865154#action_12865154
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David Smiley commented on SOLR-1568:
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I've finally tried this out successfully. But I needed a lat-lon box search,
not a circle. It wasn't hard to modify the code to offer a lower-left point
and upper-right point. I only implemented this for the Spatial Tiers point
implementation. The odd part was that the code internally wanted to know the
diameter of a circle based search in miles. So I translated this to the
distance from one corner of the box search to the oppose one... then divided by
the square root of 2 to reduce this amount to what the diameter would be of a
circle fitting *within* the box search.
I haven't bothered with any scoring modification, I'm most interested in
filtering.
> Implement Spatial Filter
> ------------------------
>
> Key: SOLR-1568
> URL: https://issues.apache.org/jira/browse/SOLR-1568
> Project: Solr
> Issue Type: New Feature
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Priority: Minor
> Fix For: 1.5
>
> Attachments: CartesianTierQParserPlugin.java,
> SOLR-1568.Mattmann.031010.patch.txt, SOLR-1568.patch, SOLR-1568.patch,
> SOLR-1568.patch, SOLR-1568.patch, SOLR-1568.patch, SOLR-1568.patch,
> SOLR-1568.patch, SOLR-1568.patch
>
>
> Given an index with spatial information (either as a geohash,
> SpatialTileField (see SOLR-1586) or just two lat/lon pairs), we should be
> able to pass in a filter query that takes in the field name, lat, lon and
> distance and produces an appropriate Filter (i.e. one that is aware of the
> underlying field type for use by Solr.
> The interface _could_ look like:
> {code}
> &fq={!sfilt dist=20}location:49.32,-79.0
> {code}
> or it could be:
> {code}
> &fq={!sfilt lat=49.32 lat=-79.0 f=location dist=20}
> {code}
> or:
> {code}
> &fq={!sfilt p=49.32,-79.0 f=location dist=20}
> {code}
> or:
> {code}
> &fq={!sfilt lat=49.32,-79.0 fl=lat,lon dist=20}
> {code}
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