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

问题描述

我正在编写一个带有多个管道的函数.我想在最后一个管道之前将一些步骤保存为 .tbl 或数据框.例如:a %>% b %>% c，我想保存步骤'c'，但也想要步骤'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'.

我知道一种选择是做两个管道，但我相信那一定有更好的方法.

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.我找到一个更好的解决方案，使用大括号{} 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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