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https://issues.apache.org/jira/browse/LUCENE-6487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14560411#comment-14560411
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ASF subversion and git services commented on LUCENE-6487:
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Commit 1681907 from [~dsmiley] in branch 'dev/branches/lucene6487'
[ https://svn.apache.org/r1681907 ]
LUCENE-6487: Geo3D with WGS84 in-progress with David's mods
(PlanetModel, and refactor of Geo3dShapeRectRelationTestCase)
> Add WGS84 capability to geo3d support
> -------------------------------------
>
> Key: LUCENE-6487
> URL: https://issues.apache.org/jira/browse/LUCENE-6487
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spatial
> Reporter: Karl Wright
> Attachments: LUCENE-6487.patch, LUCENE-6487.patch, LUCENE-6487.patch,
> LUCENE-6487.patch
>
>
> WGS84 compatibility has been requested for geo3d. This involves working with
> an ellipsoid rather than a unit sphere. The general formula for an ellipsoid
> is:
> x^2/a^2 + y^2/b^2 + z^2/c^2 = 1
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