Effective method to solve matplotlib Chinese garbled problem

An effective method to quickly solve matplotlib Chinese garbled characters

Introduction: matplotlib is a commonly used drawing library in Python. However, when using Chinese for annotation and display, problems often occur. Garbled characters. This article will introduce some effective workarounds and provide specific code examples.

1. Set the font
matplotlib uses the system font for Chinese display by default, but the system font often does not contain Chinese characters, so you need to manually set the appropriate Chinese font. First, you need to confirm whether the Chinese font has been installed on your computer. If not, you need to download and install it first.

Commonly used Chinese fonts include Song font, Hei font, Kai font, etc. Here, Song font is used as an example for demonstration. After installing the required fonts, you can set the fonts through the following code:

import matplotlib.pyplot as plt
from matplotlib.font_manager import FontProperties

font = FontProperties(fname="SimSun.ttc")  # 设置字体为SimSun（宋体）
plt.rcParams["font.family"] = font.get_name()

2. Use Unicode encoding
Another solution is to use Unicode encoding to convert Chinese to the corresponding Unicode encoding, and Use it directly in your code. This avoids reliance on system fonts and ensures consistent display in different environments.

For example, to convert the Chinese "test" to Unicode encodingu6d4bu8bd5, you can use the following code for drawing:

import matplotlib.pyplot as plt

plt.plot([1, 2, 3, 4], [1, 4, 9, 16])
plt.xlabel('u6d4bu8bd5')  # 使用Unicode编码显示中文
plt.show()

3. Use a custom font file
If If you want to customize the font style, you can place the font file in the directory where the code is located and register it using the addfont method in the font_manager module. Then set the font, the example is as follows:

import matplotlib.pyplot as plt
from matplotlib.font_manager import FontProperties

# 注册自定义字体文件
font_path = 'myfont.ttf'
plt.font_manager.addfont(font_path)

# 设置自定义字体
font = FontProperties(fname=font_path)
plt.rcParams["font.family"] = font.get_name()

plt.plot([1, 2, 3, 4], [1, 4, 9, 16])
plt.xlabel('自定义字体')
plt.show()

Through the above three methods, you can quickly solve the problem of Chinese garbled characters in matplotlib. Choose the appropriate solution based on actual needs to ensure correct Chinese display.

Conclusion:
When using matplotlib for Chinese drawing, the problem of Chinese garbled characters is a common problem. This article describes three effective workarounds and provides specific code examples. I hope these methods can help readers easily solve the problem of Chinese garbled characters in matplotlib and successfully complete the task of data visualization.

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