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Date: Sat, 22 Sep 2012 01:15:07 +1100 (NCT)
From: "David Smiley (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: <1470003826.107722.1348236907669.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (SOLR-3864) Spatial maxDetailDist doesn't follow
 degrees standardization
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David Smiley created SOLR-3864:
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             Summary: Spatial maxDetailDist doesn't follow degrees standardization
                 Key: SOLR-3864
                 URL: https://issues.apache.org/jira/browse/SOLR-3864
             Project: Solr
          Issue Type: Bug
          Components: Schema and Analysis
            Reporter: David Smiley
            Assignee: David Smiley


Technically this bug is in Lucene spatial but it's on a factory that is only really used by the Solr adapter, plus I added a mandatory attribute so I decided to file it here.

The maxDetailDist attribute on SpatialRecursivePrefixTreeFieldType is interpreted as kilometers for a geospatial context.  However, for this first release of spatial, all distances are standardized on degrees.  Of course I want to support kilometers but not inconsistently and there isn't time for that right now.  Because this is likely to be a common problem of interpreting distances for this field, I decided to add a mandatory attribute "units" which must be "degrees".  When kilometers is supported then it will be added.

Furthermore, the name "maxDetailDist" as a name isn't so great. As part of some renames related to this sort of thing a month back I overlooked this one.  I think "maxDistErr" is better and more consistent with attributes such as "distErr" you can put in shape query.

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