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Posted to issues@commons.apache.org by "oskar_hertwig (JIRA)" <ji...@apache.org> on 2013/05/07 16:41:17 UTC

[jira] [Updated] (MATH-972) LinearInterpolator Misconception

     [ https://issues.apache.org/jira/browse/MATH-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

oskar_hertwig updated MATH-972:
-------------------------------

    Attachment: Test.java
                PiecewiseLinearFunction.java
    
> LinearInterpolator Misconception
> --------------------------------
>
>                 Key: MATH-972
>                 URL: https://issues.apache.org/jira/browse/MATH-972
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.2
>         Environment: All
>            Reporter: oskar_hertwig
>            Priority: Trivial
>         Attachments: PiecewiseLinearFunction.java, Test.java
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> The method interpolate() of the class LinearInterpolator return a polynomialSplineFunction althought a piecewiseContinuousFunction have to be returned.
> This cause a bug. Indeed when the interpolated serie is localy constant the linear interpolation should lead to constant value between this points. This is not possible when the returned object is a PolynomialSplineFunction

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