Moving X-axis in Matplotlib during real-time plot

To move X-axis in Matplotlib during real-time plot, we can take the following steps −

• Set the figure size and adjust the padding between and around the subplots.
• Create a figure and a set of subplots.
• Create x and y data points using numpy.
• Plot x and y data points using plot() method.
• Make an animation by repeatedly calling a function *animate* that moves the X-axis during real-time plot.
• To display the figure, use show() method.

Example

import matplotlib.pylab as plt
import matplotlib.animation as animation
import numpy as np

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

fig, ax = plt.subplots()

x = np.linspace(0, 15, 100)
y = np.cos(x)

ax.plot(x, y, lw=2, color='red')

def animate(frame):
   ax.set_xlim(left=0, right=frame)

ani = animation.FuncAnimation(fig, animate, frames=10)

plt.show()

Output