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How to add a title to a Matplotlib legend?

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  • Last Updated : 24 Jan, 2021
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Prerequisites: Matplotlib

In this article, we will see how can we can add a title to a legend in our graph using matplotlib, Here we will take two different examples to showcase our graph.

Approach:

  • Import required module.
  • Create data.
  • Add a title to a legend.
  • Normally plot the data.
  • Display plot.

Below is the Implementation:

Example 1:

In this example, we will draw different lines with the help of matplotlib and Use the title argument to plt.legend() to specify the legend title.

Python3




# importing package
import matplotlib.pyplot as plt
import numpy as np
  
# create data
X = [1, 2, 3, 4, 5]
  
# plot lines
plt.plot(X, np.sin(X), label = "Curve-1")
plt.plot(X, np.cos(X), label = "Curve-2")
  
# Add a title to a legend
plt.legend(title = "Legend Title")
plt.title("Line Graph - Geeksforgeeks")
  
plt.show()

Output:

Example 2:

In this example, we will draw a Bar Graph with the help of matplotlib and Use the title argument to plt.legend() to specify the legend title.

Python3




# importing package
import matplotlib.pyplot as plt
  
# sample code 
plt.bar([1, 2, 3], [16, 4, 1], 
        color ='yellow',
        label = 'Label 2'
  
plt.bar([4, 5], [2, 4], 
        label = 'Label 1')
  
# Add a title to a legend
plt.legend(title = "Variation Rate")
  
plt.title("Line Graph - Geeksforgeeks")
  
plt.show()

Output:


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