<p>我找不到解决方法,所以我自己破解了。我在matplotlib.patches补丁程序模块。这允许您在同一图形中的不同轴之间绘制线。下面将在左侧创建饼图,在右侧创建堆积条形图:</p>
<pre><code>import matplotlib.pyplot as plt
from matplotlib.patches import ConnectionPatch
import numpy as np
import math
# style choice
plt.style.use('fivethirtyeight')
# make figure and assign axis objects
fig = plt.figure(figsize=(15,7.5))
ax1 = fig.add_subplot(121)
ax2 = fig.add_subplot(122)
# pie chart parameters
ratios = [.4, .56, .04]
labels = ['Approve', 'Disapprove', 'Undecided']
explode=[0.1,0,0]
# rotate so that first wedge is split by the x-axis
angle = -180*ratios[0]
ax1.pie(ratios, autopct='%1.1f%%', startangle=angle,
labels=labels,explode=explode )
# bar chart parameters
xpos = 0
bottom = 0
ratios = [.33, .54, .07, .06]
width = .2
colors = ['y','m','#99ff99','#ffcc99']
for j in range(len(ratios)):
height = ratios[j]
ax2.bar(xpos, height, width, bottom=bottom, color=colors[j])
ypos = bottom + ax2.patches[j].get_height()/2
bottom += height
ax2.text(xpos,ypos, "%d%%" %
(ax2.patches[j].get_height()*100), ha='center')
plt.title('Gender of approvers')
plt.legend(('Women', 'Men', 'Gender Neutral', 'Alien'))
plt.axis('off')
plt.xlim(-2.5*width, 2.5*width)
</code></pre>
<p>然后添加两条线,分别将饼图的第一个楔块与堆积条形图的顶部和底部连接起来:</p>
^{pr2}$
<p>情节如下:
<a href="https://i.stack.imgur.com/FRm9H.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FRm9H.png" alt="Bar in pie example"/></a></p>