pandas 熊猫将数据框绘制为多个条形图
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pandas plot dataframe as multiple bar charts
提问by jxn
This is my pandas dataframe df:
这是我的Pandas数据框df：
ab channel booked
0 control book_it 466
1 control contact_me 536
2 control instant 17
3 treatment book_it 494
4 treatment contact_me 56
5 treatment instant 22
I want to plot 3 groups of bar chart (according to channel):
我想绘制 3 组条形图（根据channel）：
for each channel: plot control booked value vs treatment booked value.
对于每个渠道：绘制控制预订值与治疗预订值。
hence i should get 6 bar charts, in 3 groups where each group has control and treatment booked values.
因此我应该得到 6 个条形图，分为 3 个组，其中每个组都有控制和治疗预定值。
SO far i was only able to plot booked but not grouped by ab:
到目前为止，我只能绘制预定但不能按 ab 分组的图：
ax = df_conv['booked'].plot(kind='bar',figsize=(15,10), fontsize=12)
ax.set_xlabel('dim_contact_channel',fontsize=12)
ax.set_ylabel('channel',fontsize=12)
plt.show()
This is what i want (only show 4 but this is the gist):
这就是我想要的（只显示 4 但这是要点）：
回答by Stop harming Monica
Pivot the dataframe so control and treatment values are in separate columns.
旋转数据框，使控制值和处理值位于不同的列中。
df.pivot(index='channel', columns='ab', values='booked').plot(kind='bar')
