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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-562) "UnivariateRealPeriodicInterpolator"
Date Wed, 27 Apr 2011 12:22:03 GMT

    [ https://issues.apache.org/jira/browse/MATH-562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025766#comment-13025766
] 

Gilles commented on MATH-562:
-----------------------------

I've removed the "offset" parameter.

Shall I commit the code? You can then maybe figure out a unit test that shows the possible
problems.


> "UnivariateRealPeriodicInterpolator"
> ------------------------------------
>
>                 Key: MATH-562
>                 URL: https://issues.apache.org/jira/browse/MATH-562
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Gilles
>            Assignee: Gilles
>            Priority: Minor
>             Fix For: 3.0
>
>
> It would be an interpolator implementation that assumes that the data to be interpolated
is periodic. Thus values that are outside of the range can be passed to the interpolation
function:
> They will be wrapped into the initial range before being passed to the class that actually
computes the interpolation.
> The constructor prototype would be:
> {code}
> /**
>  * Builds an interpolator.
>  *
>  * @param interpolator Interpolator.
>  * @param period Period.
>  * @param offset Offset.
>  * @param extend Number of points to be appended at the beginning and
>  * end of the sample arrays in order to avoid interpolation failure at
>  * the (periodic) boundaries of the orginal interval. The value is the
>  * number of sample points which the original {@code interpolator} needs
>  * on each side of the interpolation point.
>  */
> public UnivariateRealPeriodicInterpolator(UnivariateRealInterpolator interpolator,
>                                           double period,
>                                           double offset,
>                                           int extend) {
>     // ...
> }
> {code}
> Would it be useful to have that in CM?

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