Matplotlib Tutorial - Axis Label
In this tutorial we’re going to learn about axis labels, titles and legends in Matplotlib. These could help the graph to be self-explanatory with such kind of context.
Matplotlib Axis Label
matplotlib.pyplot.xlabel(label, fontdict=None, labelpad=None, **kwargs)
It sets the label for the x-axis. Similarly, matplotlib.pyplot.ylabel sets the label of y-axis.
Parameters
| Name | Description |
|---|---|
label |
label text |
fontdict |
label text font dictionary, like family, color, weight and size |
labelpad |
Spacing in points between the label and the x-axis |
# -*- coding: utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 4 * np.pi, 1000)
y = np.sin(x)
plt.figure(figsize=(4, 3))
plt.plot(x, y, "r")
plt.xlabel("Time (s)", family="serif", color="r", weight="normal", size=16, labelpad=6)
plt.show()
It specifies the label of x-axis below,
plt.xlabel("Time (s)", family="serif", color="r", weight="normal", size=16, labelpad=6)
Below is the detailed explanation,
-
Times (s)
This is the label text of x-axis
-
family='serif'
It specifies the label text font family to be serif. You could choose the family from the popular options like [ 'serif' | 'sans-serif' | 'cursive' | 'fantasy' | 'monospace' ]
-
color='r'
The font text has the color of red. Refer to color option in last chapter to pick up more colors.
-
weight='normal'
It specifies the label text to have a normal weight. The weight option is ['light', 'normal', 'medium', 'semibold', 'bold', 'heavy', 'black'].
-
size=16
It assigns the font size to be 16.
-
labelpad = 6
The distance between x-axis and the label is 6 points.
Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.
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