CODEWITHSUNDEEP
pythonpandasdataframematplotlibhistogram
user280809
user280809

Reputation: 53

How to make a grid of histograms in pandas with a common graph in all of them

Is there a way to use the pandas.DataFrame.hist() function to create a grid of histograms, where each graph contains a specific variable, as well as a common variable in all of them? For example, in the following DataFrame, I'd like to have depth to be graphed with length in one of them, and with width in the other.

import pandas as pd

df = pd.DataFrame({
     'length': [1.5, 0.5, 1.2, 0.9, 3, 0.4, 0.2],
     'width': [0.7, 0.2, 0.15, 0.2, 1.1, 0.2, 0.1],
     'depth': [1, 0.4, 0.5, 1.1, 2, 0.1, 0.9]
     }, index= ['pig', 'rabbit', 'duck', 'chicken', 'horse', 'cow', 'dog'])
hist = df.hist(bins=3)

Upvotes: 1

Views: 1272

Answers (1)

Quang Hoang
Quang Hoang

Reputation: 150805

I think you need to re-draw the histogram again:

# draw the histograms for other columns except `depth`
axes = df.drop('depth',axis=1).hist(bins=3)

# draw histogram for `depth` in each of the subplots
for ax in axes.flat:
    df['depth'].hist(bins=3, ax=ax, alpha=0.7)

Output:

enter image description here

Upvotes: 1

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