Michael McCandless created LUCENE-7069:
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Summary: Add LatLonPoint.nearest to find closest indexed point to
a given query point
Key: LUCENE-7069
URL: https://issues.apache.org/jira/browse/LUCENE-7069
Project: Lucene - Core
Issue Type: Improvement
Reporter: Michael McCandless
Assignee: Michael McCandless
Fix For: master, 6.1
KD trees (used by Lucene's new dimensional points) excel at finding "nearest
neighbors" to a given query point ... I think we should add this to Lucene's
sandbox as:
{noformat}
public static Document nearest(IndexReader r, String field, double lat,
double lon) throws IOException
{noformat}
I only implemented the 1 nearest neighbor for starters ... I think we can
easily generalize this in the future to K nearest.
It could also be generalized to more than 2 dimensions, but for now I'm making
the class package private in sandbox for just the geo2d (lat/lon) use case.
I don't think this should go into 6.0.0, but should go into 6.1: it's a new
feature, and we need to wrap up and ship 6.0.0 already ;)
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