4.6. Stacked Bar Chart

• Set the bottom argument for second bar as the values of first bar

import pandas as pd
import matplotlib.pyplot as plt

data = {'Month':['Jan','Feb','March','April'],
        'Sales': [99, 98, 95, 90],
        'Profit': [10,20,30,40]
       }
df=pd.DataFrame(data,columns=['Sales','Profit'],index=data['Month'])
df

	Sales	Profit
Jan	99	10
Feb	98	20
March	95	30
April	90	40

fig,ax=plt.subplots()
ax.bar(df.index,
       df['Sales'],
      label='Sales') 

ax.bar(df.index,
       df['Profit'],
      bottom=df['Sales'],
      label='Profit') 

ax.set_title('Profit vs Sales')
ax.set_ylabel('Dollars')
ax.legend()

<matplotlib.legend.Legend at 0x7ff4635976d0>