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How to calculate b-spline interpolation

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MJ
MJ 2021-5-17
回答： Shiva Kalyan Diwakaruni 2021-5-24
How do I calculate b-form spline interpolation?
https://www.mathworks.com/help/curvefit/introducing-spline-fitting.html
This page says I can use csapi but that does not seem like the right function. Using the curve fit toolbox it would be ideal if I can convert smoothing spline into b-form.

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回答（1 个）

Shiva Kalyan Diwakaruni
Hi,
The “ppmak” function allows you to create a piecewise polynomial by specifiying a strictly increasing list of breaks
To convert to and from B-form and ppform, You can use the fn2fm function
You can refer to below link for more information
https://www.mathworks.com/help/curvefit/fn2fm.html
https://www.mathworks.com/help/curvefit/the-b-form.html
https://www.mathworks.com/help/curvefit/the-ppform.html
Hope it helps.

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