How to plot 2D math vectors with Matplotlib?

MatplotlibServer Side ProgrammingProgramming

To plot 2D math vectors with matplotlib, we can take the following steps−

  • Create vector cordinates using numpy array.
  • Get x, y, u and v data points.
  • Create a new figure or activate an existing figure using figure method.
  • Get the current axis using gca() method.
  • Set x an y limits of the axes.
  • To redraw the current figure, use draw() method.
  • To display the figure, use show() method.


import numpy as np
import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True
soa = np.array([[0, 0, 3, 2], [0, 0, 4, 5], [0, 0, 9, 9]])
X, Y, U, V = zip(*soa)
ax = plt.gca()
ax.quiver(X, Y, U, V, angles='xy', scale_units='xy', scale=1, color=['red', 'green', 'yellow'])
ax.set_xlim([-1, 10])
ax.set_ylim([-1, 10])


Updated on 06-May-2021 13:46:09