maskForNyquistModes

returns a mask with locations of modes that are not fully resolved

---

Declaration

 nyquistMask = WVGeometryDoublyPeriodic.maskForNyquistModes(Nx,Ny,Nz);

Parameters

• Nx grid points in the x-direction
• Ny grid points in the y-direction
• Nz grid points in the z-direction (defuault 1)

Returns

• nyquistMask mask aliased mode

Discussion

Returns a ‘mask’ (matrices with 1s or 0s) indicating where Nyquist modes are located a standard FFT matrix.

Basic usage,

  NyquistMask = wvm.maskForNyquistModes(8,8);

will return a mask that contains 1 at the locations of modes that will are at the Nyquist frequency of the Fourier transforms.