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https://issues.apache.org/jira/browse/MATH-1284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14972890#comment-14972890
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Gilles commented on MATH-1284:
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bq. obviously wrong for any mathematician
Well, It's not obvious to me, nor to anyone who might have looked at this CM
code since version 3.3.
bq. I understand that the intention of these classes is to model geometrical
concepts.
I would think so too.
The discussion link which you give above is not authoritative. Care to share a
math reference?
> Vector is-not-a Point
> ---------------------
>
> Key: MATH-1284
> URL: https://issues.apache.org/jira/browse/MATH-1284
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.5
> Reporter: Roman Werpachowski
> Priority: Minor
>
> The class hierarchy for geometry claims that Vector is-a Point:
> https://commons.apache.org/proper/commons-math/apidocs/org/apache/commons/math3/geometry/Point.html
> This is mathematically incorrect, see e.g.
> http://math.stackexchange.com/a/645827
> Just because they share the same numerical representation, Point and Vector
> shouldn't be crammed into a common class hierarchy.
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