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https://issues.apache.org/jira/browse/SOLR-1568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876279#action_12876279
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David Smiley commented on SOLR-1568:
------------------------------------

I have been testing the capabilities of this patch further.  I am using 
LatLonType and I have multiple points per document.  It doesn't appear that the 
logic in LatLonType properly handles multi-value fields since its doing range 
queries for the latitude and longitude separately.  I have a document with a 
couple points it, Copenhagen Denmark and Ethiopia.    If I query for points in 
the box Lat: 10.8 - 5.4, and Lon: 9.50 - 14.23 then I find this document when I 
shouldn't.  This box is at a place south of Copenhagen and West of Ethiopia.

Oh by the way, I made some modifications after applying the patch so that I 
could query by a lat-lon box instead of a point-radius.  It was very easy.

> 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: Next
>
>         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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