Cubic spline interpolation with second derivative at ends as zero

2014 6 11
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更新时间：2014 6 12
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Hi all,
I need a function for cubic spline interpolation where second derivative at both the ends are zero (i.e. Natural or Free spline). My version of MATLAB does not allow to use "csape".
If not a function, atleast suggest some method to work around the above problem.
Please help!
Thanks, Anirban

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回答（1 个）

Mahdi
Mahdi 2014-6-11

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Doesn't the spline function work?

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Anirban Naskar
Anirban Naskar 2014-6-12
Hi,
Is there any technique by which I can use the spline function, giving additional boundary conditions that second derivative in the end as zero?
Mahdi
Mahdi 2014-6-12
My knowledge of splines isn't that good, but doesn't cubic splines already consider that the second derivative at the end is zero? So you can use spline(x,y,xx, 'cubic')?

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Mahdi
Mahdi
2014-6-12

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