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From: Michael McCandless <lucene@mikemccandless.com>
Date: Sat, 1 Jul 2017 17:09:41 -0400
Message-ID: <CAL8PwkZ68DZFZCoRQJtcRW+Ds=tDuBsTmYmyEBdg-XaJ2FUdPw@mail.gmail.com>
Subject: Re: Lucene GeoNear Search and Sort Performance
To: Lucene Users <java-user@lucene.apache.org>, sc <scattamanchi@4info.com>
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archived-at: Sat, 01 Jul 2017 21:10:32 -0000

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You can use LatLonPoint.newDistanceQuery to get the results within the
specified distance, and then use LatLonDocValuesField.newDistanceSort to
sort by distance, and use the IndexSearcher.search method that takes Sort.
Then the results should be all points within the radius, sorted by
distance.  That should (maybe) be faster than computing haversin yourself
on all hits.

Extending LatLonPoint.nearest to take a distance instead of top N should be
possible ... maybe open an issue?

Mike McCandless

http://blog.mikemccandless.com

On Thu, Jun 29, 2017 at 1:41 PM, sc <scattamanchi@4info.com> wrote:

> Thank you so much. With LatLonPoint.nearest(..), I am getting results in
> 6ms,
> with accurate results, when I compared MongoDB.geoNear().
>
> I also  tried with LatLonPoint.newDistanceQuery, and I got results in 6ms
> but the results are NOT the nearest points.
>
> Few more questions:
>
> Is there an API that use with LatLonPoint.nearest where I can specify the
> radius.
>
> Or how can I sort results from LatLonPoint.newDistanceQuery?
>
> Thanks again.
>
>
>
>
>
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