bundles / scipy latest / scipy / fftpack / _pseudo_diffs / shift

function

`scipy.fftpack._pseudo_diffs:shift`

source: /scipy/fftpack/_pseudo_diffs.py :503

Signature

   def     shift (    x    ,    a    ,    period    =  None   ,    _cache    =  <_thread._local object at 0x0000>     )

Summary

Shift periodic sequence x by a: y(u) = x(u+a).

Extended Summary

If x_j and y_j are Fourier coefficients of periodic functions x and y, respectively, then

y_j = exp(j*a*2*pi/period*sqrt(-1)) * x_f

Parameters

x : array_like: The array to take the pseudo-derivative from.
a : float: Defines the parameters of the sinh/sinh pseudo-differential
period : float, optional: The period of the sequences x and y. Default period is 2*pi.

Aliases

scipy.fftpack.shift