- matplotlib Matplotlib Circle A:

import numpy as np import matplotlib.pyplot as plt x = np.linspace(-1.0, 1.0, 100) y = np.linspace(-1.0, 1.0, 100) X, Y = np.meshgrid(x, y) F = X**2 + Y**2 - 1.0 fig, ax = plt.subplots() ax.contour(X, Y, F, [0]) ax.set_aspect(1) plt.title('How to plot a circle with matplotlib ?', fontsize=8) plt.xlim(-1.25, 1.25) plt.ylim(-1.25, 1.25) plt.grid(linestyle='-') fig