How to rotate x labels using Pygal?

Last Updated : 24 Jan, 2021

Prerequisites: Pygal

Pygal is a graphics and user interface library for Python that provides functionality commonly required in designing and science applications. While making a plot it is important for us to optimize its label, title, size. In this article, we will see how we can rotate the X-Label value of the plot window in the Pygal module. This can be done by passing the angle of rotation to x_label_rotation parameter.

Here are various ways to change the default plot x_label as per our requirement.

Approach:

Import required module.
Create a chart object.
Pass x_label_rotation value in function.
Label the graph.
Display Graph.

Implementation of the concept discussed above is given below:

Example 1:

Python3

# import library
import pygal
import numpy
  
# creating the chart object
chart = pygal.Bar(x_label_rotation=20)
  
# Random data
chart.x_labels = [
    'First Bar !',
    'Second Bar !',
    'Third Bar !',
    'Fourth Bar !']
chart.add('line', [0.1, .034, .065, .035])
  
# naming the title
chart.title = 'Bar Chart'
  
chart.render_to_png('img.png');

Output:

Example 2:

Python3

# importing pygal
import pygal
import numpy
  
# creating the chart object
chart = pygal.Line(x_label_rotation=90)
  
# Random data
chart.x_labels = [
    'First Point !',
    'Second point !',
    'Third Point !',
    'Fourth Point !']
chart.add('line', [0.1, .034, .065, .035])
  
# naming the title
chart.title = 'Line Chart'
  
chart.render_to_png('img.png')