fftshift (Matlab function) Shift zero-frequency component of discrete Fourier transform to center of spectrum

## Matlab/Scilab equivalent

Matlab | Scilab
    fftshift
    fftshift

## Particular cases

fftshift(A[,dim])

  Due to the fact that strings or not considered in the same way in Matlab and in Scilab, results are not equal if A is a string matrix or vector in fftshift(A) or fftshift(A,dim). mtlb_fftshift can emulate this particularity in Scilab.

fftshift(A,dim)

  In Matlab, dim can be greater than the number of dimensions of A but in Scilab you get an error message in this case. mtlb_fftshift can emulate this particularity in Scilab.

## Examples

Matlab | Scilab
    Y = fftshift('str')
    Y = 'rst'
    Y = fftshift("str")
    Y = "str"
    Y = mtlb_fftshift("str")
    Y = "rst"