Python 如何避免在 matplotlib 饼图中标签和 autopct 重叠？
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How to avoid overlapping of labels & autopct in a matplotlib pie chart?
提问by user123
My Python code is:
我的 Python 代码是：
values = [234, 64, 54,10, 0, 1, 0, 9, 2, 1, 7, 7]
months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
'Jul','Aug','Sep','Oct', 'Nov','Dec']
colors = ['yellowgreen', 'red', 'gold', 'lightskyblue',
'white','lightcoral','blue','pink', 'darkgreen',
'yellow','grey','violet','magenta','cyan']
plt.pie(values, labels=labels, autopct='%1.1f%%', shadow=True,
colors=colors, startangle=90, radius=1.2)
plt.show()
Is it possible to show the labels "Jan", "Feb", "Mar", etc. and the percentages, either:
是否可以显示标签“Jan”、“Feb”、“Mar”等以及百分比：
- without overlapping, or
- using an
arrow mark?
- 不重叠，或
- 使用
arrow mark?
采纳答案by Saullo G. P. Castro
Alternatively you can put the legends beside the pie graph:
或者，您可以将图例放在饼图旁边：
import matplotlib.pyplot as plt
import numpy as np
x = np.char.array(['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct', 'Nov','Dec'])
y = np.array([234, 64, 54,10, 0, 1, 0, 9, 2, 1, 7, 7])
colors = ['yellowgreen','red','gold','lightskyblue','white','lightcoral','blue','pink', 'darkgreen','yellow','grey','violet','magenta','cyan']
porcent = 100.*y/y.sum()
patches, texts = plt.pie(y, colors=colors, startangle=90, radius=1.2)
labels = ['{0} - {1:1.2f} %'.format(i,j) for i,j in zip(x, porcent)]
sort_legend = True
if sort_legend:
patches, labels, dummy = zip(*sorted(zip(patches, labels, y),
key=lambda x: x[2],
reverse=True))
plt.legend(patches, labels, loc='left center', bbox_to_anchor=(-0.1, 1.),
fontsize=8)
plt.savefig('piechart.png', bbox_inches='tight')
EDIT: if you want to keep the legend in the original order, as you mentioned in the comments, you can set sort_legend=Falsein the code above, giving:
编辑：如果您想按照原始顺序保留图例，正如您在评论中提到的，您可以sort_legend=False在上面的代码中进行设置，给出：
回答by real_aravind
Try tightlayout.
尝试紧布局。
plt.tight_layout()
at the end of your code. It may prevent the overlap a little bit.
在您的代码末尾。它可以稍微防止重叠。
