How to sort bars in increasing order in a bar chart in matplotlib?

To sort bars in increasing order in a bar chart in matplotlib, we can take the following steps −

Set the figure size and adjust the padding between and around the subplots.
Make a data frame, df, of two-dimensional, size-mutable, potentially heterogeneous tabular data.
Add a subplot to the current figure.
Make a bar plot with the dataframe, df.
Add a subplot to the current figure.
Make a df_sorted by a column marks.
Make a bar plot with df_sorted.
To display the figure, use show() method.

Example

import pandas as pd
from matplotlib import pyplot as plt

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

df = pd.DataFrame(
   dict(
      names=['John', 'James', 'David', 'Gary', 'Watson'],
      marks=[23, 34, 30, 19, 20]
   )
)

plt.subplot(121)
plt.bar('names', 'marks', data=df, color='red')

plt.subplot(122)
df_sorted = df.sort_values('marks')
plt.bar('names', 'marks', data=df_sorted, color='orange')

plt.show()

Output

It will produce the following output

Notice the bar chart on the right. The bars are sorted in the increasing order of their values.

Rishikesh Kumar Rishi

Published on 16-Sep-2021 13:38:02

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