How do I add a prefix to several variable names using dplyr?

Question

I\'m trying to add a common prefix to each of the variable names in a data.frame. For example, using the mtcars data, I could add the prefix \"cars.\" using th

Answer 1

Another dplyr solution:

I find it easiest with the dplyr rename_all, rename_at, rename_if

Try this for renaming all column names:

mtcars %>% rename_all(function(x){paste0("cars.", x)})

Try this for renaming "some" column names:

mtcars %>% rename_at(vars(hp:wt) ,function(x){paste0("cars.", x)})