Description Computes the 2D Fast Fourier Transform (FFT) of a given 2D array. If the subroutine succeeds, the FFT component values will be stored in real and imag. If the subroutine fails, it sets an error and returns without modifying the arrays.
Syntax FFT2D real, imag, forward
Parameters real( ) As Double The real values of the array being transformed. The values of real() are modified after the subroutine executes.
imag( ) As Double The imaginary values of the array being transformed. The values of imag() are modified after the subroutine executes.
forward As Boolean Indicates the direction of the transformation. Set to True for a forward transformation, False for an inverse transformation.
See Also
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