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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-13589) Allow zplot to visualize 2D clusters and convex hulls
Date Tue, 02 Jul 2019 02:04:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-13589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876598#comment-16876598
] 

ASF subversion and git services commented on SOLR-13589:
--------------------------------------------------------

Commit 7e0df16220d2b4d6a867356bd488341dbedca58a in lucene-solr's branch refs/heads/branch_8x
from Joel Bernstein
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=7e0df16 ]

SOLR-13589: Add zplot cluster test case


> 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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