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https://issues.apache.org/jira/browse/SOLR-16292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-16292:
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Labels: pull-request-available (was: )
> NVector for alternative great-circle distance calculations
> ----------------------------------------------------------
>
> Key: SOLR-16292
> URL: https://issues.apache.org/jira/browse/SOLR-16292
> Project: Solr
> Issue Type: Improvement
> Components: search, spatial
> Affects Versions: 9.0
> Reporter: Dan Rosher
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 4h 40m
> Remaining Estimate: 0h
>
> [N-Vector|https://en.wikipedia.org/wiki/N-vector#Example:_Great_circle_distance]
> is a three-parameter representation that can be used to calculate the
> great-circle distance (assuming a spherical Earth).
> This implementation makes use of fast implementation of acos I wrote, that
> approximates acos with a maclaurin series expansion.
> For small distances it compares well with Math.acos, and is a faster way of
> calculating the great-circle distance than Haversine.
>
>
>
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