How to animate a sine curve in Matplotlib?

To make animated sine curve, we can take the following steps −

• Set the figure size and adjust the padding between and around the subplots.
• Create a new figure or activate an existing figure.
• Add an axes to the current figure and make it the current axes.
• Plot a line with empty lists.
• To initialize the line, pass empty lists.
• To animate the sine curve, update sine curve values and return the line instance.
• To display the figure, use show() method.

Example

import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

fig = plt.figure()
ax = plt.axes(xlim=(0, 2), ylim=(-2, 2))
line, = ax.plot([], [], lw=2)

def init():
   line.set_data([], [])
   return line,

def animate(i):
   x = np.linspace(0, 2, 1000)
   y = np.sin(2 * np.pi * (x - 0.01 * i))
   line.set_data(x, y)
   return line,

anim = animation.FuncAnimation(fig, animate, init_func=init, frames=200, interval=20, blit=True)
plt.show()

Output