创建条形图

Question

• 我已经调换数据低于以下GROUPBY，它在底部
• 产生的输出，我不知道怎么拉子级数据来创建两个表。一个用于PUT，另一个用于CALL。
  • ，其中X轴=罢工
  • y轴= OI和
  • 我想用matplotlib到两个柱状图叠加成一个。等安装图像

任何指针或更好的方法来创建以下输出这张图？ 。

df_OI = df[['oi','strike','type','expiry']].groupby([pd.Grouper(freq='D'),'strike','type','expiry']).agg(['sum']) 

Created          oi 
            sum 
datetime strike type expiry   
2017-09-29 130.0 PUT 2017-10-06 12 
      145.0 PUT 2017-10-06 21 
      147.0 PUT 2017-10-06  1 
      149.0 PUT 2017-10-06  2 
      150.0 CALL 2017-10-06  1 
        PUT 2017-10-06 111 
      152.5 CALL 2017-10-06 12 
        PUT 2017-10-06 100 
      155.0 CALL 2017-10-06 10 
        PUT 2017-10-06 66 
      157.5 CALL 2017-10-06  8 
        PUT 2017-10-06 29 
      160.0 CALL 2017-10-06 21 
        PUT 2017-10-06 1405 
      162.5 CALL 2017-10-06 14 
        PUT 2017-10-06 327 
      165.0 CALL 2017-10-06 56 
        PUT 2017-10-06 2383 
      167.5 CALL 2017-10-06 12 
        PUT 2017-10-06 2804 
      170.0 CALL 2017-10-06 354 
        PUT 2017-10-06 1945 
      172.5 CALL 2017-10-06 438 
        PUT 2017-10-06 3022 
      175.0 CALL 2017-10-06 3373 
        PUT 2017-10-06 2093 
      177.5 CALL 2017-10-06 1688 
        PUT 2017-10-06 1201 
      180.0 CALL 2017-10-06 8241 
        PUT 2017-10-06 2269 
      182.5 CALL 2017-10-06 2152 
        PUT 2017-10-06 219 
      185.0 CALL 2017-10-06 4008 
        PUT 2017-10-06 469 
      187.5 CALL 2017-10-06 2006 
        PUT 2017-10-06 270 
      190.0 CALL 2017-10-06 1354 
        PUT 2017-10-06 37 
      192.5 CALL 2017-10-06 484 
      195.0 CALL 2017-10-06 377 
      197.5 CALL 2017-10-06 31 
      200.0 CALL 2017-10-06 109 
        PUT 2017-10-06  3 
      202.5 CALL 2017-10-06  5 
      205.0 CALL 2017-10-06  5 

Answer 1

因为我有2列，我要和bar图表，我总空间是2。因此，我使用width=2以使两个条跨越2.

df.reset_index().set_index(['strike', 'type'])['sum'].unstack() \ 
    .plot.bar(width=2, alpha=.5, figsize=(10, 4), ec='white')