Matplotlib中不同大小的子图

Question

我有4个子图，我成功地将3个子图绘制在一行上，但是我无法在第二行上添加另一个图形，该图形必须具有与这3个图形相同的宽度。 前三个图形：

我想要添加的第二个图形：

我尝试这样做：

plt.close()

font={'family':'sans-serif','weight':'normal','size':'14'}
plt.rc('font',**font)

fig, axes = plt.subplots(nrows=3, ncols=1)


plt.tight_layout(pad=0.05, w_pad=0.001, h_pad=2.0)
ax1 = plt.subplot(231) # creates first axis

#ax1.text(20, 2500, 'CYCLE :', size=14) 

#ax1.text(1000, 2500, str((image)*50+50), size=14) 

ax1.tick_params(labelsize=8) 
ax1.set_xticks([0,2000,500,1000,1500])
ax1.set_yticks([0,2000,500,1000,1500])
ax1.tick_params(labelsize=8) 
ax1.imshow(mouchetis[::-1,::],alpha=0.6)
ax1.imshow(V_exp_invmaskA,cmap='hot',extent=(X.min(),2015,Y.min(),2015), alpha=0.4)
i1 = ax1.imshow(V_maskA,cmap='hot',extent=(X.min(),2015,Y.min(),2015),alpha=0.8)
ax1.set_xticklabels([0,2000,500,1000,1500])
ax1.set_yticklabels([0,2000,500,1000,1500])
ax1.set_title("MASQUE A", y=1.05, fontsize=10)


ax2 = plt.subplot(232) # creates second axis
ax2.set_xticks([0,2000,500,1000,1500])
ax2.set_yticks([0,2000,500,1000,1500])
ax2.imshow(mouchetis[::-1,::],alpha=0.6)
ax2.imshow(V_exp_invmaskB,cmap='hot',extent=(X.min(),2015,Y.min(),2015), alpha=0.4)
i2 = ax2.imshow(V_maskB,cmap='hot',extent=(X.min(),2015,Y.min(),2015),alpha=0.8)
ax2.set_title("MASQUE B", y=1.05, fontsize=10)
ax2.set_xticklabels([])
ax2.set_yticklabels([])


ax3 = plt.subplot(233) # creates first axis
ax3.set_xticks([0,2000,500,1000,1500])
ax3.set_yticks([0,2000,500,1000,1500])
ax3.imshow(mouchetis[::-1,::],alpha=0.6)
ax3.imshow(V_exp_invmaskC,cmap='hot',extent=(X.min(),2015,Y.min(),2015), alpha=0.4)
i3 = ax3.imshow(V_maskC,cmap='hot',extent=(X.min(),2015,Y.min(),2015),alpha=0.8)
ax3.set_xticklabels([])
ax3.set_yticklabels([])

#在这里我添加了第四张图，但我不知道该怎么做...

ax4 = plt.subplot(234)
ax4.plot(cycles,res_meanA,'ko',label='A',markersize=5,markerfacecolor='None')

ax4.legend(loc=2,prop={'size':12})
ax4.subplots_adjust(left=0.15)
plt.show()

- user3601754

Answer 1

使用gridspec：

from matplotlib.gridspec import GridSpec
import matplotlib.pyplot as plt

fig=plt.figure()

gs=GridSpec(2,3) # 2 rows, 3 columns

ax1=fig.add_subplot(gs[0,0]) # First row, first column
ax2=fig.add_subplot(gs[0,1]) # First row, second column
ax3=fig.add_subplot(gs[0,2]) # First row, third column
ax4=fig.add_subplot(gs[1,:]) # Second row, span all columns

fig.savefig('gridspec.png')

- tmdavison

Answer 2

当您创建轴时，应查看GridSpec文档，以获得更多的灵活性。

ax1 = plt.subplot2grid((2,3),(0,0))
ax2 = plt.subplot2grid((2,3),(0,1))
ax3 = plt.subplot2grid((2,3),(0,2))
ax4 = plt.subplot2grid((2,3),(1,0), colspan=3)

- Diziet Asahi

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另请参阅使用subplot2grid的带图例示例，该链接上面提到的GridSpec并未涵盖。 - Homero Esmeraldo

Answer 3

import pylab as pl
ax1 = pl.subplot(2, 3, 1)
ax2 = pl.subplot(2, 3, 2)
ax3 = pl.subplot(2, 3, 3)
ax4 = pl.subplot(2, 1, 2)

- HYRY