Adjust size of ConfusionMatrixDisplay (ScikitLearn)

Question

How to set the size of the figure ploted by ScikitLearn's ConfusionMatrixDisplay?

import numpy as np
from sklearn.metrics import ConfusionMatrixDisplay, confusion_matrix
cm = confusion_matrix(np.arange(25), np.arange(25))
cmp = ConfusionMatrixDisplay(cm, display_labels=np.arange(25))
cmp.plot()

The code above shows this figure, which is too tight:

Answer 1

You can send a matplotlib.axes object to the .plot method of sklearn.metrics.ConfusionMatrixDisplay. Set the size of the figure in matplotlib.pyplot.subplots first.

import numpy as np
from sklearn.metrics import ConfusionMatrixDisplay, confusion_matrix
import matplotlib.pyplot as plt

cm = confusion_matrix(np.arange(25), np.arange(25))
cmp = ConfusionMatrixDisplay(cm, display_labels=np.arange(25))
fig, ax = plt.subplots(figsize=(10,10))
cmp.plot(ax=ax)