R

mutate in R

flights <- flights %>% 
  mutate(gain = dep_delay - arr_delay)
  // mutate is use to save the result of some variable in new variable

r code mutate

mutate(.data, ...)

# S3 method for data.frame
mutate(
  .data,
  ...,
  .keep = c("all", "used", "unused", "none"),
  .before = NULL,
  .after = NULL
)

transmute(.data, ...)

r code mutate

starwars %>%
  select(name, mass, species) %>%
  mutate(mass_norm = mass / mean(mass, na.rm = TRUE))