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https://issues.apache.org/jira/browse/SOLR-13589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877090#comment-16877090
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ASF subversion and git services commented on SOLR-13589:
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Commit 96d11063a79efb05f876441fefffe1599f8b0b7d in lucene-solr's branch
refs/heads/SOLR-13105-visual from Joel Bernstein
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=96d1106 ]
SOLR-13589: Fix precommit
> Allow zplot to visualize 2D clusters and convex hulls
> -----------------------------------------------------
>
> Key: SOLR-13589
> URL: https://issues.apache.org/jira/browse/SOLR-13589
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: streaming expressions
> Reporter: Joel Bernstein
> Priority: Major
> Fix For: 8.2
>
> Attachments: SOLR-13589.patch, SOLR-13589.patch, clusters.png,
> convex.png
>
>
> This ticket will add support for visualization of convex hulls through the
> *projectToBorder* function and 2D clusters by adding the *clusters* parameter
> to the zplot function.
> The *projectToBorder* function is a function that works together with the
> existing *convexHull* function. It takes two parameters:
> 1) A Convex Hull created by the *convexHull* function.
> 2) A matrix of 2D points to project to the border.
> The projectToBorder function then projects each 2D point to the Convex Hull
> border and returns a matrix with these points.
> Using this approach the border of a convex hull can be visualized in
> interesting ways.
> Sample visualizations are attached.
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