Python数据可视化之Matplotlib(折线图) (2)

(4)管理多个子图：
   import matplotlib.pyplot as plt
   import numpy as np
   import matplotlib.gridspec as gridspec
   import matplotlib.font_manager as fm  #字体管理器

my_font = fm.FontProperties(fname="/usr/share/fonts/wqy-microhei/wqy-microhei.ttc")

plt.figure()

x_data = np.linspace(-np.pi,np.pi,64,endpoint=True)
gs = gridspec.GridSpec(2,3) #将绘图区分成两行三列
ax1 = plt.subplot(gs[0,:])#指定ax1占用第一行(0)整行
ax2 = plt.subplot(gs[1,0])#指定ax2占用第二行(1)的第一格(第二个参数为0)
ax3 = plt.subplot(gs[1,1:3])#指定ax3占用第二行(1)的第二、三格(第二个参数为1：3)

#绘制正弦曲线
ax1.plot(x_data,np.sin(x_data))
ax1.spines[\'right\'].set_color(\'none\')
ax1.spines[\'top\'].set_color(\'none\')
ax1.spines[\'bottom\'].set_position((\'data\',0))
ax1.spines[\'left\'].set_position((\'data\',0))
ax1.set_title(\'正弦曲线\',fontproperties=my_font)

#绘制余弦曲线
ax2.plot(x_data,np.cos(x_data))
ax2.spines[\'right\'].set_color(\'none\')
ax2.spines[\'top\'].set_color(\'none\')
ax2.spines[\'bottom\'].set_position((\'data\',0))
ax2.spines[\'left\'].set_position((\'data\',0))
ax2.set_title(\'余弦曲线\',fontproperties=my_font)

#绘制正切曲线
ax3.plot(x_data,np.tan(x_data))
ax3.spines[\'right\'].set_color(\'none\')
ax3.spines[\'top\'].set_color(\'none\')
ax3.spines[\'bottom\'].set_position((\'data\',0))
ax3.spines[\'left\'].set_position((\'data\',0))
ax3.set_title(\'正切曲线\',fontproperties=my_font)
plt.show()