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https://issues.apache.org/jira/browse/LUCENE-4464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-4464:
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Attachment: LUCENE-4464_polygon_almost_touch_test.patch
LUCENE-4464 google maps geohashes.png
I attached another screenshot of Google Earth with KML loaded for the 1st
indexed polygon and for the query shape. It shows the lines almost touch but
not quite -- showing ~28.4 meters in-between. The KML files were generated via
the spatial-demo app, with 0.01 distErrPct. I was able to load the indexed
polygon my adjusting the data near the self-intersection error.
I also attached a new test and I was not able to reproduce the problem you
report, even with the default 2.5% distErrPct. I had to raise it to about 6%
until I saw a false intersection. The fact that you see an intersection and I
don't could very well be related to small improvements in the interpretation of
distErrPct / distErr / maxDistErr that were done a couple months ago.
I'm going to commit this patch tomorrow. It does an "assume" call to check if
JTS is on the classpath. The test has no compile-time dependencies on JTS,
just runtime.
> "Intersects" spatial query returns polygons it shouldn't
> --------------------------------------------------------
>
> Key: LUCENE-4464
> URL: https://issues.apache.org/jira/browse/LUCENE-4464
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/spatial
> Affects Versions: 3.6.1
> Environment: linux and windows
> Reporter: solr-user
> Assignee: David Smiley
> Priority: Critical
> Labels: solr, spatial, spatialsearch
> Attachments: LUCENE-4464 google maps geohashes.png,
> LUCENE-4464_polygon_almost_touch_test.patch, LUCENE-4464 self intersect.png
>
>
> full description, including sample schema and data, can be found at
> http://lucene.472066.n3.nabble.com/quot-Intersects-quot-spatial-query-returns-polygons-it-shouldn-t-td4008646.html
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