column renaming with dplyr

Question

I am trying to rename a column using dplyr::rename, but failing..

library(dplyr)

cars %>% 
  filter(speed > 20) %>% 
  rename(speed = new_speed)

# Error: Unknown variables: new_speed.

Any ideas what's wrong there?

Answer 1

It's the other way

cars %>% 
  filter(speed > 20) %>% 
  rename(new_speed = speed)