Gantt charts are widely used in project planning to show the project schedule. It's a type of bar chart that lists the tasks on the vertical axis and the time intervals on the horizontal axis. The width of the horizontal bars in the graph shows the duration of each activity.
To plot a Gantt chart in matplotlib, we can use the broken_barh() method.
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.
Set the y and x limits of the axes.
To display the figure, use show() method.
Example
import matplotlib.pyplot as plt # Set the figure size plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True # Figure and set of subplots 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') # ylim and xlim of the axes ax.set_ylim(5, 35) ax.set_xlim(0, 200) # Show the plot plt.show()
Output
It will produce the following output −
