Matplotlib 3.0 Cookbook

How to do it...

The following are the steps required to draw our plot:

1. Define the figure as follows:

fig = plt.figure(1, figsize=(8, 4))

2. Define the transformation function, as shown here:

curv2rect_tr = PolarAxes.PolarTransform()

3. Define the custom ticks dictionary for angle coordinates as follows:

pi = np.piangle_ticks = [(0, r"$0$"), (.25*pi, r"$\frac{1}{4}\pi$"),               (.5*pi, r"$\frac{1}{2}\pi$"), (.75*pi, r"$\frac{3}                {4}\pi$"),               ( pi, r"$\pi$"), (1.25*pi, r"$1.25\pi$"),               (1.5*pi, r"$1.5\pi$"), (1.75*pi, r"$1.75\pi$")]

4. Define the grid locators and formatters for the following angle and radius coordinates:

grid_locator1 = FixedLocator([value for value, string in                               angle_ticks])tick_formatter1 = DictFormatter(dict(angle_ticks))grid_locator2 ...