Matplotlib.axes.Axes.set_xticklabels() in Python

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_xticklabels() Function

The Axes.set_xticklabels() function in axes module of matplotlib library is used to Set the x-tick labels with list of string labels.

Syntax: Axes.set_xticklabels(self, labels, fontdict=None, minor=False, **kwargs)

Parameters: This method accepts the following parameters.

  • labels : This parameter is the list of of string labels.
  • fontdict : This parameter is the dictionary controlling the appearance of the ticklabels.
  • minor : This parameter is used whether set major ticks or to set minor ticks

Return value: This method returns a list of Text instances.



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

Example 1:

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# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Polygon
    
    
def func(x):
    return (x - 4) * (x - 6) * (x - 5) + 100
    
    
a, b = 2, 9  # integral limits
x = np.linspace(0, 10)
y = func(x)
    
fig, ax = plt.subplots()
ax.plot(x, y, "k", linewidth = 2)
ax.set_ylim(bottom = 0)
    
# Make the shaded region
ix = np.linspace(a, b)
iy = func(ix)
verts = [(a, 0), *zip(ix, iy), (b, 0)]
  
poly = Polygon(verts, facecolor ='green',
               edgecolor ='0.5', alpha = 0.4)
ax.add_patch(poly)
    
ax.text(0.5 * (a + b), 30
        r"$\int_a ^ b f(x)\mathrm{d}x$",
        horizontalalignment ='center'
        fontsize = 20)
    
fig.text(0.9, 0.05, '$x$')
fig.text(0.1, 0.9, '$y$')
    
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
  
ax.set_xticks((a, b-a, b))
ax.set_xticklabels(('$a$', '$valx$', '$b$'))
    
fig.suptitle('matplotlib.axes.Axes.set_xticklabels() \
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()

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Output:

Example 2:

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# Implementation of matplotlib function
import numpy as np
import matplotlib.pyplot as plt
    
# Fixing random state for reproducibility
np.random.seed(19680801)
    
x = np.linspace(0, 2 * np.pi, 100)
y = np.sin(x)
y2 = y + 0.2 * np.random.normal(size = x.shape)
    
fig, ax = plt.subplots()
ax.plot(x, y)
ax.plot(x, y2)
   
ax.set_xticks([0, np.pi, 2 * np.pi])
ax.set_xticklabels(['0', r'$\pi$', r'2$\pi$'])
    
ax.spines['left'].set_bounds(-1, 1)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
    
fig.suptitle('matplotlib.axes.Axes.set_xticklabels() \
function Example\n\n', fontweight ="bold")
fig.canvas.draw()
plt.show()

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Output:




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