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How to Set the X and the Y Limit in Matplotlib with Python?
  • Last Updated : 02 Dec, 2020

Prerequisites : Matplotlib

In this article, we will learn how to set the X limit and Y limit in matplotlib with Python. Before that some concepts need to be familiarized with:

  • Python : Python is a high-level, general-purpose and a very popular programming language. It is being used in web development, Machine Learning applications, along with all cutting edge technology in Software Industry. 
  • Matplotlib : Matplotlib is a visualization library in supported by Python for 2D plots of arrays. Matplotlib is a multi-platform data visualization library built on NumPy arrays and designed to work with the broader SciPy stack. It was introduced by John Hunter in the year 2002.
  • xlim() : It is a function in pyplot module of matplotlib library which is used to get or set the x-limits of the current axes.
  • ylim() : It is a function in pyplot module of matplotlib library which is used to get or set the y-limits of the current axes.

Approach

  • Import Library 
  • Load or create data
  • Plot a graph
  • Use xlim() / ylim() or both.

Let’s discuss these steps with the help of some examples :

Example 1: (By using xlim() method)

Python3






# import packages
import matplotlib.pyplot as plt
import numpy as np
  
# create data
x = np.linspace(-10, 10, 1000)
y = np.sin(x)
  
# plot the graph
plt.plot(x, y)
  
# limit x by -5 to 5
plt.xlim(-5, 5)

Output :

Simple Plot

X limited Plot

Example 2: (By using ylim() method)

Python3




# import packages
import matplotlib.pyplot as plt
import numpy as np
  
# create data
x = np.linspace(-10, 10, 1000)
y = np.cos(x)
  
# plot the graph
plt.plot(x, y)
  
# limit y by 0 to 1
plt.ylim(0, 1)

Output :

Simple Plot

Y Limited Plot

Example 3: (Using both xlim() and ylim() methods)

Python3




# import packages
import matplotlib.pyplot as plt
import numpy as np
  
# create data
x = np.linspace(-10, 10, 20)
y = x
  
# plot the graph
plt.plot(x, y)
  
# limited to show positive axes
plt.xlim(0)
plt.ylim(0)

Output :

Simple Plot

X and Y Limited Plot

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