问题
Hey i'm trying to rename some columsn by adding "Last_" with the new version of dplyr but I keep getting this error
Error: `across()` must only be used inside dplyr verbs.
this is my code
data %>% rename(across(everything(), ~paste0("Last_", .)))
dplyr version: v1.0.2
回答1:
We can use rename_with instead of rename
library(dplyr)
library(stringr)
data %>%
rename_with(~str_c("Last_", .), everything())
Reproducible example
data(iris)
head(iris) %>%
rename_with(~str_c("Last_", .), .cols = everything())
# Last_Sepal.Length Last_Sepal.Width Last_Petal.Length Last_Petal.Width Last_Species
#1 5.1 3.5 1.4 0.2 setosa
#2 4.9 3.0 1.4 0.2 setosa
#3 4.7 3.2 1.3 0.2 setosa
#4 4.6 3.1 1.5 0.2 setosa
#5 5.0 3.6 1.4 0.2 setosa
#6 5.4 3.9 1.7 0.4 setosa
According to ?rename
rename() changes the names of individual variables using new_name = old_name syntax; rename_with() renames columns using a function.
and in ?across
across() makes it easy to apply the same transformation to multiple columns, allowing you to use select() semantics inside in summarise() and mutate().
The description says its use within mutate/summarise (and transmute?), and no indication of usage with any other functions i.e. it would fail with select
回答2:
From the vignette('colwise') (or see https://cran.r-project.org/web/packages/dplyr/vignettes/colwise.html)
"across() doesn’t work with select() or rename() because they already use tidy select syntax; if you want to transform column names with a function, you can use rename_with()."
来源：https://stackoverflow.com/questions/64188671/renaming-multiple-columns-with-dplyr-renameacross