在dplyr中保存管道之间的输出 [英] Save output between pipes in dplyr

问题描述

我正在用几个管道编写一个函数.我想将某些步骤另存为.tbl或最后一个管道之前的数据帧.例如:a %>% b %>% c，我想保存步骤'c'，但也要保存步骤'b'.

I am writing a function with several pipes. I would like to save some of the steps as .tbl or data frame before the last pipe. For instance: a %>% b %>% c, I would like to save the step 'c', but also want the step 'b'.

我知道一个选择是做两个管道，但是我相信必须有更好的方法.

I know that one option is to do two pipes, but I believe that must have a better way.

cars %>% mutate(kmh = dist/speed) %>% summary()

推荐答案

感谢您的帮助.我找到了一个更好的解决方案，它使用了大括号{}和->>.见下文

Thanks for the help. I found a better solution using braces{} and ->>. See below

   c = cars %>% mutate(var1 = dist*speed)%>%
   {. ->> b } %>%   #here is save
   summary()
   c
   head(b)

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