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Posted to dev@lucene.apache.org by "Nicholas Knize (JIRA)" <ji...@apache.org> on 2015/12/01 22:58:11 UTC
[jira] [Updated] (LUCENE-6908) TestGeoUtils.testGeoRelations is
buggy with irregular rectangles
[ https://issues.apache.org/jira/browse/LUCENE-6908?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nicholas Knize updated LUCENE-6908:
-----------------------------------
Description: 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. (was: 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 will better divide the space enabling use of the fast cartesian approximation methods instead of having to convert to an expensive oblate geometry approach.)
> 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
>
>
> 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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