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Normalizing a histogram in Matplotlib

schedule Aug 10, 2023
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PythonMatplotlib
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We can normalize a histogram in Matplotlib using the density keyword argument and setting it to True. By normalizing a histogram, the sum of the bar area equals 1.

Consider the below histogram where we normalize the data:

nums1 = [1,1,2,3,3,3,3,3,4,5,6,6,6,7,8,8,9,10,12,12,12,12,14,18]
nums2= [10,12,13,13,14,14,15,15,15,16,17,18,20,22,23]

fig,ax = plt.subplots() # Instantiate figure and axes object
ax.hist(nums1, label="nums1", histtype="step", density=True) # Plot histogram of nums1
ax.hist(nums2, label="nums2", histtype="step", density=True) # Plot histogram of nums2
plt.legend()
plt.show()

Normalized histogram:

robocat
Published by Arthur Yanagisawa
Edited by 0 others
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