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Matrix.IFFT2D Method (TMtx, boolean)

Inverse two-dimensional Fast Fourier Transformation from complex to complex.

Pascal
function IFFT2D(const Mtx: TMtx; NoScale: boolean = False): TMtx; overload;

Transformation is applied on Mtx matrix and results are saved in the calling matrix. The source matrix must be complex. If source matrix is real, an exception will be raised. The source matrix is not changed. Calling matrix will be complex and will have the same size as the source matrix. NoScale parameter allows the scaling to be turned off.

var a,b: Matrix; begin a.SetIt (2,4,False, [1, 2, 3, 4, -5, 6,-7, 8] ); a.ExtendToComplex; b.IFFT2D(a); // result will be // [(1.5, 0), (0, -0.5), (-3.5, 0), (0, 0.5), // (1, 0), (-0.5, 0), (3, 0), (-0.5, 0) ] end;
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