Python Data Structures and Algorithms

Bubble chart

Another variant of the scatter plot is the bubble chart. In a scatter plot, we only plot the x, y points of the data. Bubble charts add another dimension by illustrating the size of the points. This third dimension may represent sizes of markets or even profits:

    import numpy as np     import matplotlib.pyplot as plt     n = 10     x = np.random.rand(n)     y = np.random.rand(n)     colors = np.random.rand(n)     area = np.pi * (60 * np.random.rand(n))**2     plt.scatter(x, y, s=area, c=colors, alpha=0.5)     plt.show() 

With the variable n, we specify the number of randomly generated x and y values. This same number is used to determine the random colors for our x and y coordinates. Random bubble sizes are determined by area = np.pi * (60 * np.random.rand(n))**2 ...