In this example we will show how to draw the line of Polynomial Regression in Python.
Source Code
import numpy as np
import matplotlib.pyplot as plt
x = [1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23]
y = [645, 552, 450, 408, 411, 430, 418, 440, 445, 430, 560, 630]
p = np.poly1d(np.polyfit(x, y, 3))
line_x = np.linspace(1, 23, num=1000)
plt.scatter(x, y, label='original data')
plt.plot(line_x, p(line_x), 'r', label='the line of polynomial regression')
plt.legend()
plt.show()
Output:
