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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (SOLR-13589) Allow zplot to visualize 2D clusters and convex hulls
Date Tue, 02 Jul 2019 01:56:00 GMT


ASF subversion and git services commented on SOLR-13589:

Commit 96d11063a79efb05f876441fefffe1599f8b0b7d in lucene-solr's branch refs/heads/master
from Joel Bernstein
[;h=96d1106 ]

SOLR-13589: Fix precommit

> Allow zplot to visualize 2D clusters and convex hulls
> -----------------------------------------------------
>                 Key: SOLR-13589
>                 URL:
>             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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