How can i Find the derivative of Spline Function?

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Imtiaz Ahmad on 11 Jul 2020

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Answered: KSSV on 12 Jul 2020

Accepted Answer: KSSV

Track1.m

Hello Everyone,

I made a 3D Track using spline function and i want to take the derivatives of the spline upto 3rd order .I used diff() and gradient function to take derivatives but results are not okay because it's for numerical differentiation.I need to find a way for piece wise polynomials.Can anybody help how can i do it.I have attached my code.Thank you.

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KSSV on 12 Jul 2020

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https://www.mathworks.com/matlabcentral/answers/563288-how-can-i-find-the-derivative-of-spline-function#answer_464699

https://in.mathworks.com/matlabcentral/answers/95194-how-do-i-find-the-derivative-of-a-spline-curve-in-matlab-7-9-r2009b

https://in.mathworks.com/matlabcentral/fileexchange/71225-splinefit

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