Matplotlib Quiver Plot  quiver() Function
In this tutorial, we will cover the Quiver Plot using Matplotlib Library.
To plot the 2D field of arrows, we use the Quiver plot in the matplotlib library.
 This plot mainly helps in displaying the velocity vectors as arrows having components
(u,v)
at the points(x,y)
. 
The Quiver plots are useful for Electrical engineers to visualize electrical potential and for Mechanical engineers to show stress gradients.
Creating Matplotlib Quiver Plot
In order to create a Quiver Plot the ax.quiver()
function is used.
The required syntax to use this function is as follows:
ax.quiver(x_pos, y_pos, x_dir, y_dir, color)
Following are the parameters of this function, which you can see above in the syntax:

x_pos and y_pos
These two parameters of the function are used to indicate the starting position of the arrows.

x_dir and y_dir
These two parameters of the function are used to indicate the directions of the arrows.

color
This parameter is used to specify the color of the Quiver Plot.
Let us now dive into some examples related to this.
Simple Quiver Plot Example:
In the example given below, we will cover how to plot a Quiver plot with a single arrow:
import numpy as np
import matplotlib.pyplot as plt
x_pos = 0
y_pos = 0
x_direct = 1
y_direct = 1
fig, ax = plt.subplots(figsize = (10, 7))
ax.quiver(x_pos, y_pos, x_direct, y_direct)
ax.set_title('Quiver plot with a single arrow')
plt.show()
Here is the output:
Two Arrow Quiver Plot Example:
In the example given below, we will cover how to plot a Quiver plot with two arrows:
import numpy as np
import matplotlib.pyplot as plt
x_pos = [0, 0]
y_pos = [0, 0]
x_direct = [1, 0]
y_direct = [1, 1]
fig, ax = plt.subplots(figsize = (12, 7))
ax.quiver(x_pos, y_pos, x_direct, y_direct,scale = 8)
ax.axis([1.5, 1.5, 1.5, 1.5])
plt.show()
Here is the output:
Time for Live Example!
Now we will cover a live example where we will draw the Quiver plot using meshgrid:
In the above live example, you can even change the code and try running other code too, to see different quiver plot outputs.