I want to create a figure with 2 subplots using mosaic and display the same signal in polar and cartesian coordinates with Matplotlib.

import matplotlib.pyplot as plt
import numpy as np

t = np.arange(0, 30, 0.1)
s = np.sin(2 * np.pi * 1 * t)

fig = plt.figure(layout="constrained")
ax_dict = fig.subplot_mosaic(
    [
        ["signal1"],
        ["signal2"],
    ]
)

p1 = ax_dict["signal1"].plot(s)
p2 = ax_dict["signal2"].plot(s)

plt.show()

So I would like to display on the left the figure in cartesian coordinate and on the right in polar. How is it possible ?

Thank you in advance.