Hands-on Matplotlib by Ashwin Pajankar

Author:Ashwin Pajankar
Language: eng
Format: epub
ISBN: 9781484274101
Publisher: Apress

Polar Charts

You can also create polar graphs that are in the shape of pie charts. However, a fundamental difference from the Cartesian (X-Y) coordinate system is that in a polar chart the coordinate system is radially arranged, so you need the angle (theta) and distance from the origin (r is the radius) to visualize a point or set of points. Let’s create a dataset as follows:N = 20

theta = np.linspace(0.0, 2 * np.pi, N)

r = 10 * np.random.rand(N)

The set of points can be visualized as follows:plt.subplot(projection='polar')

plt.bar(theta, r, bottom=0.0,

color=['r', 'g', 'b'], alpha=0.2)

plt.show()

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