如何使用python在python中绘制多索引数据帧？

Question

我有单列的多索引数据框.我想基于该数据帧绘制堆积条形图.数据如下:

df= pd.DataFrame(index=pd.MultiIndex([[1,2,3],['open','closed']],[[0,0,1,1,2,2],[0,1,0,1,0,1]]))

df['id']=[23,6,12,4,31,16]
df
        id
state
1 closed 23
  open    6
2 closed 12
  open    4
3 closed 31
  open   16

Answer 1

你需要unstack你的数据帧:

%matplotlib inline
df.unstack().plot(kind='bar', stacked=True)