transformFromSpatialDomain

transform from \((x,y,z)\) to \((k,l,z)\) on the DFT grid

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Declaration

 u_bar = transformFromSpatialDomain(u)

Parameters

• u a real-valued matrix of size [Nx Ny Nz]

Returns

• u_bar a complex-valued matrix of size [Nk_dft Nl_dft Nz]

Discussion

Performs a Fourier transform in the x and y direction. The resulting matrix is on the DFT grid.