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Plot scatter points on polar axis in Matplotlib
To plot scatter points on polar axis in Matplotlib, we can take the following steps −
- Set the figure size and adjust the padding between and around the subplots.
- Initialize a variable, N, for number of sample data.
- Get r, theta, area and color data using numpy
- Create a new figure or activate an existing figure.
- Plot theta, r, colors and area, using scatter() method.
- To display the figure, use show() method.
Example
import numpy as np import matplotlib.pyplot as plt plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True N = 150 r = 2 * np.random.rand(N) theta = 2 * np.pi * np.random.rand(N) area = 200 * r**2 colors = theta fig = plt.figure() ax = fig.add_subplot(projection='polar') c = ax.scatter(theta, r, c=colors, s=area, cmap='hsv', alpha=0.75) plt.show()
Output
Updated on: 15-Jun-2021
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