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https://issues.apache.org/jira/browse/MATH-1122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14000777#comment-14000777
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Gilles commented on MATH-1122:
------------------------------

bq. We use commons math and are happy with it. Great work.

Good to hear; thanks.

bq. In the case of interpolators, a common requirement for us is to have 
extrapolation policies.

Such a discussion should usually be conducted on the "dev" ML. Please post 
there.
Then, when a course of action has been agreed on, specific requests can be 
reported here, on the issue tracking system.


> Interpolation with extrapolation handling
> -----------------------------------------
>
>                 Key: MATH-1122
>                 URL: https://issues.apache.org/jira/browse/MATH-1122
>             Project: Commons Math
>          Issue Type: Wish
>    Affects Versions: 3.3
>            Reporter: Mikael Öhman
>            Priority: Minor
>              Labels: interpolator
>
> Hello.
> We use commons math and are happy with it. Great work.
> In the case of interpolators, a common requirement for us is to have 
> extrapolation policies. For example, we may have cubic spline interpolation 
> on the curve and for any points outside the curve we may wish to linearly 
> extrapolate or we may wish to cap the value at the extreme point.
> Is this a feature you would consider adding or is there an existing/easy 
> workaround available.



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