Fourier transform in NGSolve

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1

Hello everyone!

I was wondering if there was any best way to get the FFT from a GridFunction in NGSolve?

Best,
Paul

2

Hm …

what do you assume from you mesh and your space ?
with structured meshes and Nodal-P1 you can take your coefficient vector and fead it into Python - FFT

otherwise, you have to evaluate your GridFunction on a regular grid of points (using geometric search) first.

Joachim

3

Hm …

what do you assume from you mesh and your space ?
with structured meshes and Nodal-P1 you can take your coefficient vector and fead it into Python - FFT

otherwise, you have to evaluate your GridFunction on a regular grid of points (using geometric search) first.

Joachim