Convert multiple columns to dates with lubridate and dplyr

Question

I\'m looking for a straightforward way to convert all of the variables in a data frame which begin with \'date\' to dates using lubridate::dmy() (they are curre

Answer 1

You can use mutate_at()

library(dplyr)
library(lubridate)

df <- mutate_at(df, vars(starts_with("date")), funs(dmy))

or use mutate_if to mutate all date columns to dmy. Using is.Date from lubridate.

df  <- mutate_if(df, is.Date, funs(dmy))