我正在通过Jupyter实验室学习Python,并且遇到了华夫饼图的问题。
我有以下字典,我想在华夫饼图中显示它:
import pandas as pd
import matplotlib.pyplot as plt
from pywaffle import Waffle
dic = {'Xemay':150,'Xedap':20,'Oto':180,'Maybay':80,'Tauthuy':135,'Xelua':5}
df = pd.DataFrame.from_dict(dic, orient='index')
plt.figure(FigureClass=Waffle,rows=5,values=dic,legend={'loc': 'upper left', 'bbox_to_anchor': (1, 1)})
plt.title('Số lượng xe bán được của một công ty')
plt.show()
但是结果出乎意料:
相反,图表应该看起来像这样。我在做什么错?
为了使Waffle正确显示数据,您需要对数据进行规范化,以使所有值的总和为100。
以下内容对您有用吗?
# Create a dict of normalized data. There are plenty of
# ways to do this. Here is one approach:
keys = ['Xemay', 'Xedap', 'Oto', 'Maybay', 'Tauthuy', 'Xelua']
vals = np.array([150, 20, 180, 80, 135, 5])
vals = vals/vals.sum()*100
data = dict(zip(keys, vals))
plt.figure(FigureClass=Waffle,
rows=5,
values=data,
legend={'loc': 'upper left', 'bbox_to_anchor': (1, 1.1)})
plt.show()