How to Set X-Axis Values in Matplotlib in Python?

In this article, we will be looking at the approach to set x-axis values in matplotlib in a python programming language.

The xticks() function in pyplot module of the Matplotlib library is used to set x-axis values.

Syntax:

matplotlib.pyplot.xticks(ticks=None, labels=None, **kwargs)

xticks() function accepts the following parameters:

Parameters	Description
ticks	List of xticks locations. Optional Passing an empty list will remove all the xticks.
labels	List of labels to place at given ticks location. Optional
**kwargs	Text properties used to control the appearance of labels.

Returns: xticks() function returns following values:

• locs: List of xticks location.
• labels: List of xlabel text location.

Example #1 :

In this example, we will be setting up the X-Axis Values in Matplotlib using the xtick() function in the python programming language.

Python3

# Python program to set x-axis values in matplotlib

import matplotlib.pyplot as plt

# x-axis and y-axis values for plotting
x = [1, 2, 3, 4, 5, 6]
y = [3, 1, 4, 5, 3, 6]

# labels for x-asix
labels = ['A', 'B', 'C', 'D', 'E', 'F']

# Plotting x-axis and y-axis
plt.plot(x, y)

# naming of x-axis and y-axis
plt.xlabel("X-Axis")
plt.ylabel("Y-Axis")

# naming the title of the plot
plt.title("Set X-Axis Values in Matplotlib")

# setting x-axis values
plt.xticks(x, labels)

plt.show()

Output:

Example #2:

In this example, we will use the rotation argument to accept rotation value in degree and it will rotate labels in the clockwise direction by specified degree.

Python3

# Python program to set x-axis values in matplotlib

import matplotlib.pyplot as plt

# x-axis and y-axis values for plotting
x = [1, 2, 3, 4, 5, 6]
y = [3, 1, 4, 5, 3, 6]

# labels for x-asix
labels = ['Label1', 'Label2', 'Label3', 'Label4', 'Label5', 'Label6']

# Plotting x-axis and y-axis
plt.plot(x, y)

# naming of x-axis and y-axis
plt.xlabel("X-Axis")
plt.ylabel("Y-Axis")

# naming the title of the plot
plt.title("Set X-Axis Values in Matplotlib")

# setting x-axis values and specifying rotation
# for the labels in degrees
plt.xticks(x, labels, rotation=45)

plt.show()

Output: