IFFTSHIFT  IFFTSHIFT Inverse Shift FFT Output


Usage
 
 The ifftshift function shifts the DC component (zero-frequency)
 of the output from the center of the array back to the first position
 and iseffectively the inverse of fftshift.  For vectors
 this means swapping the two halves of the vector.  For matrices,
 the first and third quadrants are swapped.  So on for N-dimensional
 arrays.  The syntax for its use is
 
      y = ifftshift(x).
 
 Alternately, you can specify that only one dimension be shifted
 
      y = ifftshift(x,dim).
 
 