Cubic spline interpolation with second derivative at ends as zero

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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

Answers (1)

Mahdi
Mahdi on 11 Jun 2014
Doesn't the spline function work?
  2 Comments
Mahdi
Mahdi on 12 Jun 2014
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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