Matplotlib.axes.Axes.set_title() in Python

Last Updated : 19 Apr, 2020

Matplotlib is a library in Python and it is numerical – mathematical extension for NumPy library. The Axes Class contains most of the figure elements: Axis, Tick, Line2D, Text, Polygon, etc., and sets the coordinate system. And the instances of Axes supports callbacks through a callbacks attribute.

matplotlib.axes.Axes.set_title() Function

The Axes.set_title() function in axes module of matplotlib library is used to set a title for the axes.

Syntax: Axes.set_title(self, label, fontdict=None, loc=’center’, pad=None, **kwargs)

Parameters: This method accepts the following parameters.

label : This parameter is the Text to use for the title.

fontdict : This parameter is the dictionary controlling the appearance of the title text.

loc : This parameter is used to set the location of the title {‘center’, ‘left’, ‘right’}.

pad : This parameter is the offset of the title from the top of the axes, in points.

Returns:This method returns the matplotlib text instance representing the title.

Below examples illustrate the matplotlib.axes.Axes.set_title() function in matplotlib.axes:

Example 1:

# Implementation of matplotlib function 
import os 
from matplotlib import font_manager as fm, rcParams 
import matplotlib.pyplot as plt 
  
fig, ax = plt.subplots() 
  
fpath = os.path.join(rcParams["datapath"],  
                     "fonts/ttf/cmr10.ttf") 
  
prop = fm.FontProperties(fname = fpath) 
fname = os.path.split(fpath)[1] 
ax.set_title('Title with special font: {}'.format(fname), 
             fontproperties = prop,  
             fontsize = 14) 
  
plt.show() 

Output:

Example 2:

# Implementation of matplotlib function 
import numpy as np 
import matplotlib.pyplot as plt 
  
x = np.arange(0.1, 5, 0.1) 
y = np.exp(-x) 
  
yerr = 0.1 + 0.1 * np.sqrt(x) 
  
fig, axs = plt.subplots(nrows = 1, 
                        ncols = 2,  
                        sharex = True) 
ax = axs[0] 
ax.errorbar(x, y, yerr = yerr,  
            color ="green") 
ax.set_title('Title of Axes 1',  
             fontweight ="bold") 
  
ax = axs[1] 
ax.errorbar(x, y, yerr = yerr, 
            errorevery = 5,  
            color ="green") 
  
ax.set_title('Title of Axes 2', 
             fontweight ="bold") 
  
  
  
fig.suptitle('matplotlib.axes.Axes.set_title() \ 
function Example\n') 
  
plt.show() 