Oct 8, 2013 · To add to @akilat90's update about sklearn.metrics.plot_confusion_matrix: You can use the ConfusionMatrixDisplay class within sklearn.metrics directly and bypass the need to pass a classifier to plot_confusion_matrix. It also has the display_labels argument, which allows you to specify the labels displayed in the plot as desired.

cm_labels = np.unique(true_label) cm_array = confusion_matrix(true_label, predict_label) cm_array_df = pd.DataFrame(cm_array, index=cm_labels, columns=cm_labels) sn.heatmap(cm_array_df, annot=True, annot_kws={"size": 12})

Apr 14, 2025 · Adding Titles and Axis Labels. We can add titles and axis labels to make the plot more descriptive. We add a custom title and axis labels to clearly indicate what the plot represents. Output:

Oct 26, 2016 · You should get the axis of the plt and change the xtick_labels (if that's what you intend to do): plt.imshow(cm, interpolation='nearest', cmap=cmap) plt.title(title) plt.colorbar() tick_marks = np.arange(len(iris.target_names)) plt.xticks(tick_marks, rotation=45) ax = plt.gca() ax.set_xticklabels((ax.get_xticks() +1).astype(str))

Jul 25, 2019 · How to add a label and percentage to a confusion matrix plotted using a Seaborn heatmap. Plus some additional options.

Nov 23, 2024 · This post outlines several methods to create a confusion matrix with labels using Python libraries like sklearn, matplotlib, and seaborn. Before we dive into solutions, let’s look at a basic example of generating a confusion matrix without labels. import numpy as np. import matplotlib.pyplot as plt.

Be aware that we recommend using the plot_confusion_matrix. When creating the display yourself, you need to have called disp.plot such that the attribute ax_ exists. The reason is that you can pass your own matplotlib axis to plot.

This tutorial shows how to plot a confusion matrix in Python using a heatmap. You can easily adapt this script to plot different data.

May 2, 2023 · With this code, you can: Display multiple confusion matrices in a single figure. Assign different titles to each subplot. Set the font size of the labels and values. Change the color of the...

Aug 9, 2019 · I've plotted a confusion matrix with scikit-learn / matplotlib thanks to different code examples I found on the web, but I'm stuck at finding how to add space between the xticklabels and the main title.