Change Figsize for Matshow in Jupyter Notebook using Matplotlib

To change the figsize for mathshow, we can use figsize in figure method argument and use fignum in matshow() method.

Steps

• Create a new figure or activate an existing figure using figure() method.
• Create a dataframe using Pandas.
• Use matshow() method to display an array as a matrix in a new figure window.
• The argument fignum can take the values None, int, or False
  • If *None*, create a new figure window with automatic numbering.
  • If a nonzero integer, draw into the figure with the given number. Create one, if it does not exist.
  • If 0, use the current axes (or create one if it does not exist).
• To display the figure, use show() method.

Example

import pandas as pd
from matplotlib import pyplot as plt
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
plt.figure()
df = pd.DataFrame({"col1": [1, 3, 5, 7, 1], "col2": [1, 5, 7, 9, 1]})
plt.matshow(df.corr(), fignum=1)
plt.show()

Output