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Home Backend Development Python Tutorial Correct way to display Chinese characters in matplotlib

Correct way to display Chinese characters in matplotlib

Jan 13, 2024 am 11:03 AM
character Chinese

Correct way to display Chinese characters in matplotlib

Correctly displaying Chinese characters in matplotlib is a problem often encountered by many Chinese users. By default, matplotlib uses English fonts and cannot display Chinese characters correctly. To solve this problem, we need to set the correct Chinese font and apply it to matplotlib.

The following are some specific code examples to help you display Chinese characters correctly in matplotlib.

First, we need to import the required libraries:

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

Next, we need to select a Chinese font and set it as the default font of matplotlib. You can choose a font that conforms to Chinese habits according to your own needs, such as bold, Song, etc.

# 設(shè)置中文字體
font = FontProperties(fname="/usr/share/fonts/yourfont.ttf")

Note that in the above code, /usr/share/fonts/yourfont.ttf is an example path, you need to replace it with the Chinese font file that actually exists on your computer path.

Then, we can start drawing graphics and use Chinese characters in graphics.

# 創(chuàng)建一個圖形對象
fig, ax = plt.subplots()

# 在圖形中添加中文文字
ax.text(0.5, 0.5, "你好,世界!", fontproperties=font, fontsize=14)

# 顯示圖形
plt.show()

In this example, we use the ax.text method to add a Chinese character "Hello, world!" to the graphic. Apply the previously set Chinese font to this text through the fontproperties parameter.

Run the above code, you should be able to see a graphics window containing Chinese characters pop up, and the Chinese characters can be displayed correctly.

In addition to the methods of setting Chinese fonts mentioned above, there are other methods that can also help you correctly display Chinese characters in matplotlib, such as using the Chinese fonts that come with the system and using mpl. rcParams to set the default font, etc. The specific method can be based on your needs to choose a solution that suits you.

To summarize, to display Chinese characters correctly in matplotlib, we need to first select a Chinese font and set it as the default font of matplotlib; then, use fontproperties## during the drawing process #Parameter applies Chinese fonts to places where Chinese characters need to be displayed.

I hope the code examples in this article can help you solve the problem of displaying Chinese characters in matplotlib. If you encounter problems or have further questions, you can refer to matplotlib's official documentation or seek help in the relevant community.

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