How to create broken horizontal bar graphs in matplotlib?

To create broken horizontal bar graphs in matplotlib, we can take the following steps −

• Set the figure size and adjust the padding between and around the subplots.
• Create a figure and a set of subplots.
• Plot a horizontal sequence of rectangles.
• Scale X and Y axes limit.
• Configure the grid lines.
• Annotate the broken bars.
• To display the figure, use show() method.

Example

import matplotlib.pyplot as plt

plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True

fig, ax = plt.subplots()

# Horizontal sequence of rectangles
ax.broken_barh([(110, 30), (150, 10)], (10, 9), facecolors='tab:blue')
ax.broken_barh([(10, 50), (100, 20), (130, 10)], (20, 9),
   facecolors=('tab:orange', 'tab:green', 'tab:red'))

# Scale X and Y axes limits
ax.set_ylim(5, 35)
ax.set_xlim(0, 200)

# Configure the grid lines
ax.grid(True)

# Annotate the broken bars
ax.annotate('race interrupted', (61, 25),
   xytext=(0.8, 0.9), textcoords='axes fraction',
   arrowprops=dict(facecolor='black', shrink=0.05),
   fontsize=16,
   horizontalalignment='right', verticalalignment='top')

plt.show()

Output

It will produce the following output