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splines with derivative conditions at support points

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Maximilian Dio
Maximilian Dio on 6 Jul 2021
Answered: Bruno Luong on 6 Jul 2021
Hi I am trying to cubically interpolate my data but I know the derivatives at these points too. I have only found the csape function to define the derivatives at the end points -> "clamped" however I could not find how to enforce the derivatives at the support points too.
Thanks for a response..
Regards max
  2 Comments
Maximilian Dio
Maximilian Dio on 6 Jul 2021
I can enforce the conditions in this for but I would like to have somethiing a build in function - this seems to be not so nice)
for i = 1:numberOfSegments
pp{i} = csape([x(i),x(i+1)],[y(i),y(i+1)],'complete',[dy(i),dy(i+1)]);
end
or even better a 5th order spline where the 3rd derivative is also continous...

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Answers (1)

Bruno Luong
Bruno Luong on 6 Jul 2021
There is the option point-wise constraints (pntcond) of my FEX BSFK to achieve your goal.

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