在没有funs()的情况下，使用其他列作为参数在summary_at()和summary_all()中起作用 [英] Use of other columns as arguments to function in summarize_at() and summarize_all() without funs()

问题描述

我正在寻找一种替代方法(作​​为解决方案

I'm looking for an alternative to this (which was provided as a solution here) that does not use funs() since funs() is soft deprecated as of dplyr 0.8.0:

mtcars %>% group_by(cyl) %>% 
        summarize_at(vars(disp, hp), funs(weighted.mean(.,wt)))
#    cyl  disp    hp
#  <dbl> <dbl> <dbl>
#1  4.00   110  83.4
#2  6.00   185 122  
#3  8.00   362 209  

推荐答案

正如R警告所说，您必须使用(在这种情况下)lambda列表

As the R warning says, you have to use (in this case) a list of lambdas

mtcars %>% group_by(cyl) %>% 
  summarize_at(vars(disp, hp), list(~weighted.mean(., wt)))

这篇关于在没有funs()的情况下，使用其他列作为参数在summary_at()和summary_all()中起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！