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+```{python}
+#| label: fig-polar
+#| fig-cap: "A line plot on a polar axis"
+
+import numpy as np
+import matplotlib.pyplot as plt
+
+r = np.arange(0, 2, 0.01)
+theta = 2 * np.pi * r
+fig, ax = plt.subplots(
+ subplot_kw = {'projection': 'polar'}
+)
+ax.plot(theta, r)
+ax.set_rticks([0.5, 1, 1.5, 2])
+ax.grid(True)
+plt.show()
+```