用管道和groupe_by（）操作df

时间：2017-06-13 16:34:43

标签： r dplyr

下面是我的df

df1

我无法弄清楚如何仅在每个区域和扇区内对数字列进行基本操作 我想（max（区域中的Colonne 3和X的扇区） - 例如X

我用

开始了我的代码 
df2<-
df1 %>%  
groupe_by(Region,Sector) %>%

但是我不知道如何在所有其他列上进行操作

2 个答案:

答案 0 :(得分：0)

这是你想要的吗？ （顺便说一下：请确保你想要的输出是什么。我们在这里帮你解决你的具体问题，不要猜你想要什么。）

对于这个“Colonne 3”，我认为它是第4列。

df2=df1 %>% group_by(Region,Sector) %>%slice(which.max(BEST_EPS_YOY_GTH))

答案 1 :(得分：0)

对不起，我没有找到如何分享我的df ... 在下面，只是我的df的第一列 我想要计算并保存在新的df中的是例如第一行：

max（BEST_EPS_YOY_GTH，如果Region = Japan＆amp;＆amp; Sector =医疗保健） - （-0.12543111）

第二行： max（BEST_EPS_YOY_GTH，如果Region = The Americas＆amp;＆amp; Sector = Consumer discretionary） - （0.02846056）

并为我所有其他列中的所有行执行此操作（我有12个像BEST_EPS_YOY_GTH

不确定它是否清楚，但非常感谢您的帮助。

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