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From "David Smiley (JIRA)" <>
Subject [jira] Commented: (LUCENE-2646) Iimplement the Military Grid Reference System for tiling
Date Thu, 16 Sep 2010 13:56:33 GMT


David Smiley commented on LUCENE-2646:

I hope you guys can make it to my session at LuceneRevolution at which I'll describe my geohash
prefix filtering technique.  I'm working on an open-source contribution but the public release
process is slow at MITRE.  I'm not yet employing a tiling technique but it's where I want
to go.

> Iimplement the Military Grid Reference System for tiling
> --------------------------------------------------------
>                 Key: LUCENE-2646
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/spatial
>            Reporter: Grant Ingersoll
> The current tile based system in Lucene is broken.  We should standardize on a common
way of labeling grids and provide that as an option.  Based on previous conversations with
Ryan McKinley and Chris Male, it seems the Military Grid Reference System (
is a good candidate for the replacement due to its standard use of metric tiles of increasing
orders of magnitude (1, 10, 100, 1000, etc.)

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