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Posted to dev@lucene.apache.org by "Joel Bernstein (JIRA)" <ji...@apache.org> on 2019/07/01 00:20:00 UTC

[jira] [Updated] (SOLR-13589) Add projectToBorder Stream Evaluator

     [ https://issues.apache.org/jira/browse/SOLR-13589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joel Bernstein updated SOLR-13589:
----------------------------------
    Description: 
The *projectToBorder* function is a function that works together with the already 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.

  was:
The *projectToBorder* function is another computational geometry function that 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.


> Add projectToBorder Stream Evaluator 
> -------------------------------------
>
>                 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
>
> The *projectToBorder* function is a function that works together with the already 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.



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