bundles / scipy latest / scipy / signal / _ltisys / TransferFunction / _z_to_zinv

staticmethod

`scipy.signal._ltisys:TransferFunction._z_to_zinv`

source: build-install/usr/lib/python3.14/site-packages/scipy/signal/_ltisys.py:925

Signature

staticmethoddef _z_to_zinv(num, den)

Summary

Change a transfer function from the variable z to z**-1.

Parameters

num, den: 1d array_like: Sequences representing the coefficients of the numerator and denominator polynomials, in order of descending degree of 'z'. That is, 5z**2 + 3z + 2 is presented as [5, 3, 2].

Returns

: num, den: 1d array_like: Sequences representing the coefficients of the numerator and denominator polynomials, in order of ascending degree of 'z**-1'. That is, 5 + 3 z**-1 + 2 z**-2 is presented as [5, 3, 2].

Aliases

scipy.signal.TransferFunction._z_to_zinv