Spline Interpolation

[Qianrui (Wei)]

Hello, can freefem + + use spline interpolation？

[julienG (Julien)]

with gsl

[Qianrui (Wei)]

Thank you for your reply. Is there an example of freefem + + for spline interpolation?

[julienG (Julien)]

Yes, the example code for gsl is here gsl.edp, it has some examples for usage of splines.

[Qianrui (Wei)]

Hello, do you have to build your own finite element space when this spline interpolation is used in FreeFem++? Take Lagrange interpolation as an example to define the finite element space, feaspace Wh (Th, P2). How to define this spline?