Python常见库matplotlib学习笔记之画图文字的中文显示

pip install matplotlib

pip install matplotlib==3.6.2

import numpy as np
import matplotlib.pyplot as plt
# 绘制曲线
x = np.linspace(0, 2*np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, label=u'正弦曲线')
plt.plot(x, y2, label=u'余弦曲线')
plt.xlabel('横轴')
plt.ylabel('纵轴')
plt.title('函数')
# 添加图例
plt.legend(loc='upper right')
# 显示图像
plt.show()

# 创建yahei文件夹
sudo mkdir /usr/share/fonts/truetype/yahei
# 拷贝字体文件到该文件夹下
sudo cp msyh.ttc /usr/share/fonts/truetype/yahei/

sudo fc-cache -f -v

fc-list | grep -i yahei

fc-list | grep TIMES

fc-list | grep SUN

rm rf ~/.cache/matplotlib

# 设置字体
plt.rcParams['font.family'] = 'Microsoft YaHei'

import numpy as np
import matplotlib.pyplot as plt

# 设置字体
plt.rcParams['font.family'] = 'Microsoft YaHei'
# plt.rcParams['font.family'] = 'SimSun'
# plt.rcParams['font.family'] = 'Times New Roman'

# 绘制曲线
x = np.linspace(0, 2*np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, label=u'正弦曲线')
plt.plot(x, y2, label=u'余弦曲线')
plt.xlabel('横轴')
plt.ylabel('纵轴')
plt.title('函数')

# 添加图例
plt.legend(loc='upper right')

# 显示图像
plt.show()

import numpy as np
import matplotlib.pyplot as plt
# 设置字体
plt.rcParams['font.family'] = 'SimSun'
plt.rcParams['font.family'] = 'Times New Roman'
# 绘制曲线
x = np.linspace(0, 2*np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, label=u'正弦曲线')
plt.plot(x, y2, label=u'余弦曲线')
# 设置横轴字体
plt.xlabel('横轴', fontfamily='SimSun')
# 设置纵轴字体
plt.ylabel('纵轴', fontfamily='SimSun')
# 设置标题字体
plt.title('函数', fontfamily='SimSun')
# 设置刻度字体
plt.xticks(fontfamily='Times New Roman')
plt.yticks(fontfamily='Times New Roman')
# 设置图例字体
plt.legend(loc='upper right', fontsize=12, edgecolor='black', fancybox=False, framealpha=1, prop={'family': 'SimSun'})
# 显示图像
plt.show()

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.font_manager as fm
# 指定字体
font_path = 'SIMSUN.TTC'  # 这里也可以填其他字体的绝对路径，只填名称表示本程序与该字体在同一级目录下 
font_prop = fm.FontProperties(fname=font_path, size=12)
en_font_path = 'TIMES.TTF'  # 这里也可以填其他字体的绝对路径，只填名称表示本程序与该字体在同一级目录下 
en_font_prop = fm.FontProperties(fname=en_font_path, size=12)
x = np.linspace(0, 2 * np.pi, 100)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, label=u'正弦曲线')
plt.plot(x, y2, label=u'余弦曲线')
plt.xlabel('横轴', fontproperties=font_prop)
plt.ylabel('纵轴', fontproperties=font_prop)
plt.title('函数', fontproperties=font_prop)
plt.xticks(fontproperties=en_font_prop)
plt.yticks(fontproperties=en_font_prop)
plt.legend(loc='upper right', fontsize=12, edgecolor='black', fancybox=False, framealpha=1, prop=font_prop)
plt.show()