>>> """
==========
Polar plot
==========

Demo of 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_rmax(2)
... ax.set_rticks([0.5, 1, 1.5, 2])  # Less radial ticks
... ax.set_rlabel_position(-22.5)  # Move radial labels away from plotted line
... ax.grid(True)
... 
... ax.set_title("A line plot on a polar axis", va='bottom')
... plt.show()
... 
... #############################################################################
... #
... # .. admonition:: References
... #
... #    The use of the following functions, methods, classes and modules is shown
... #    in this example:
... #
... #    - `matplotlib.axes.Axes.plot` / `matplotlib.pyplot.plot`
... #    - `matplotlib.projections.polar`
... #    - `matplotlib.projections.polar.PolarAxes`
... #    - `matplotlib.projections.polar.PolarAxes.set_rticks`
... #    - `matplotlib.projections.polar.PolarAxes.set_rmax`
... #    - `matplotlib.projections.polar.PolarAxes.set_rlabel_position`
...