How to calculate b-spline interpolation

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.

Answer 1

[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.