Itamar Syn-Hershko created LUCENE-4342:
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Summary: Issues with prefix tree's Distance Error Percentage
Key: LUCENE-4342
URL: https://issues.apache.org/jira/browse/LUCENE-4342
Project: Lucene - Core
Issue Type: Bug
Components: modules/spatial
Affects Versions: 4.0-BETA, 4.0-ALPHA
Reporter: Itamar Syn-Hershko
Attachments: unnamed.patch
See attached patch for a failing test
Basically, it's a simple point and radius scenario that works great as long as
args.setDistPrecision(0.0); is called. Once the default precision is used
(2.5%), it doesn't work as expected.
The distance between the 2 points in the patch is 35.75 KM. Taking into account
the 2.5% error the effective radius without false negatives/positives should be
around 34.8 KM. This test fails with a radius of 33 KM.
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