Matplotlib.axis.Axis.set_alpha() function in Python Last Updated : 15 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. It is an amazing visualization library in Python for 2D plots of arrays and used for working with the broader SciPy stack. Matplotlib.axis.Axis.set_alpha() Function The Axis.set_alpha() function in axis module of matplotlib library is used to set the alpha value used for blending. Syntax: Axis.set_alpha(self, alpha) Parameters: This method accepts the following parameters. alpha: This parameter is the contains float value or None. Return value: This method does not return any value. Below examples illustrate the matplotlib.axis.Axis.set_alpha() function in matplotlib.axis:Example 1: Python3 # Implementation of matplotlib function from matplotlib.axis import Axis import matplotlib.pyplot as plt import numpy as np # create test data np.random.seed(10**7) data = [sorted(np.random.normal(0, std, 100)) for std in range(1, 5)] fig, ax1 = plt.subplots() val = ax1.violinplot(data) ax1.set_ylabel('Result') ax1.set_xlabel('Domain Name') for i in val['bodies']: i.set_facecolor('yellow') Axis.set_alpha(i, 0.3) fig.suptitle('matplotlib.axis.Axis.set_alpha() \ function Example\n', fontweight ="bold") plt.show() Output: Example 2: Python3 # Implementation of matplotlib function from matplotlib.axis import Axis import matplotlib.pyplot as plt import numpy as np from matplotlib.patches import Ellipse NUM = 100 ells = [Ellipse(xy = np.random.rand(2) * 10, width = np.random.rand(), height = np.random.rand(), angle = np.random.rand() * 360) for i in range(NUM)] fig, ax = plt.subplots(subplot_kw ={'aspect': 'equal'}) for e in ells: ax.add_artist(e) e.set_clip_box(ax.bbox) Axis.set_alpha(e, np.random.rand()) e.set_facecolor(np.random.rand(4)) ax.set_xlim(2, 8) ax.set_ylim(2, 8) fig.suptitle('matplotlib.axis.Axis.set_alpha() \ function Example\n', fontweight ="bold") plt.show() Output: Comment More info S shubhamsingh10 Follow Improve Article Tags : Python Python-matplotlib Matplotlib-Axis Class Explore Python FundamentalsPython Introduction 3 min read Input and Output in Python 4 min read Python Variables 5 min read Python Operators 5 min read Python Keywords 2 min read Python Data Types 7 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 6 min read Python Functions 5 min read Recursion in Python 4 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 4 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 12 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 6 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library- Tutorial 4 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 7 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 7 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 3 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like