graphics(
    zgrid(xi=False, wn=False, tp=[3, 5, 7, 10, 20], ts=[2, 3, 5, 10, 20]),
    zgrid(xi=False, wn=False, tp=4, rendering_kw={"color": "r"}),
    zgrid(xi=False, wn=False, ts=7, rendering_kw={"color": "b"}),
    grid=False, aspect="equal", xlim=(-1.2, 1.2), ylim=(-1.2, 1.2))