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List:       lucene-dev
Subject:    [jira] [Commented] (LUCENE-6908) TestGeoUtils.testGeoRelations is buggy with irregular rectangles
From:       "ASF subversion and git services (JIRA)" <jira () apache ! org>
Date:       2015-12-31 16:22:49
Message-ID: JIRA.12915582.1448312820000.34471.1451578969565 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/LUCENE-6908?page=com.atlassian.jira.plugin \
.system.issuetabpanels:comment-tabpanel&focusedCommentId=15076046#comment-15076046 ] 

ASF subversion and git services commented on LUCENE-6908:
---------------------------------------------------------

Commit 1722449 from [~nknize] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1722449 ]

LUCENE-6908: Add space segmentation for handling irregular rectangle accuracy at the \
poles.

> TestGeoUtils.testGeoRelations is buggy with irregular rectangles
> ----------------------------------------------------------------
> 
> Key: LUCENE-6908
> URL: https://issues.apache.org/jira/browse/LUCENE-6908
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Nicholas Knize
> Attachments: LUCENE-6908.patch, LUCENE-6908.patch, LUCENE-6908.patch, \
> LUCENE-6908.patch, LUCENE-6908.patch 
> 
> The {{.testGeoRelations}} method doesn't exactly test the behavior of \
> GeoPoint*Query as its using the BKD split technique (instead of quad cell division) \
> to divide the space on each pass. For "large" distance queries this can create a \
> lot of irregular rectangles producing large radial distortion error when using the \
> cartesian approximation methods provided by {{GeoUtils}}. This issue improves the \
> accuracy of GeoUtils cartesian approximation methods on irregular rectangles \
> without having to cut over to an expensive oblate geometry approach.



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