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https://issues.apache.org/jira/browse/SOLR-13589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876936#comment-16876936
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ASF subversion and git services commented on SOLR-13589:
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Commit c47819300465a3f7de23c2089b18edcf05868516 in lucene-solr's branch
refs/heads/master from Joel Bernstein
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=c478193 ]
SOLR-13589: Update CHANGES.txt
> 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
> 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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