from sympy import symbols
from spb import *
xi, wn, Tp, Ts = symbols("xi, omega_n, T_p, T_s")
graphics(
    zgrid(),
    zgrid(xi=xi, wn=False, rendering_kw={"color": "r", "linestyle": "-"}, params={xi: (0.05, 0, 1)}),
    zgrid(wn=wn, xi=False, rendering_kw={"color": "g", "linestyle": "-"}, params={wn: (0.45, 0, 1)}),
    zgrid(wn=False, xi=False, tp=Tp, rendering_kw={"color": "b", "linestyle": "-"}, params={Tp: (3, 0, 20)}),
    zgrid(wn=False, xi=False, ts=Ts, rendering_kw={"color": "m", "linestyle": "-"}, params={Ts: (5, 0, 20)}),
    grid=False, aspect="equal", xlabel="Real", ylabel="Imaginary")