5 Matplotlib Methods That You Never Knew Existed

1. quiver

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1. quiver

The quiver method is used to plot vector fields in matplotlib.

A vector field is a mathematical model of the magnitude and direction of different vectors in a 2D or 3D space.

These are used to represent different physical quantities like:

• Electromagnetic fields

• Fluid dynamics, and more

How To Use?

quiver([X, Y], U, V, [C], **kwargs)

The parameters passed to this method are as follows:

• X, Y: define the x and y coordinates of the arrow locations

• U, V: define the x and y direction components of the arrow vectors/directions

• C: sets the colour of the arrows

Example Plot

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, 2*np.pi, 20)
y = np.linspace(0, 2*np.pi, 20)

# Starting positions of the vectors in the vector field
X, Y = np.meshgrid(x, y)

# Horizontal component of the vectors 
U = np.cos(X)

# Vertical component of the vectors
V = np.sin(Y)

plt.quiver…