[jira] [Commented] (GEOMETRY-21) Investigate Norm Accuracy

["Gilles Sadowski (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GEOMETRY-21?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17360159#comment-17360159 ] 

Gilles Sadowski commented on GEOMETRY-21:
-----------------------------------------

I guess that this issue has been fixed (?).

By the way, is there a reason to keep the "internal" {{Vectors}} class, rather than directly use the "Commons Numbers" API ({{Norm}} enum)?

> Investigate Norm Accuracy
> -------------------------
>
>                 Key: GEOMETRY-21
>                 URL: https://issues.apache.org/jira/browse/GEOMETRY-21
>             Project: Apache Commons Geometry
>          Issue Type: Task
>            Reporter: Matt Juntunen
>            Priority: Minor
>
> Based on discussion in GEOMETRY-17, we should investigate the floating point accuracy of the current Vector normalization methods. Specifically, when the UnitVector private subclass in Vector3D is implemented to return exactly 1.0, the SphericalPolygonsSetTest#testGeographicalMap unit test in commons-geometry-enclosing begins to fail. We should
>  # Determine the cause of this failure.
>  # Determine if the current approach with the UnitVector subclasses introduces any issues with floating point accuracy.
>  # Add unit tests for Vector[123]D to quantify and verify the accuracy of the normalization.



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