Web Reference: across() makes it easy to apply the same transformation to multiple columns, allowing you to use select() semantics inside in "data-masking" functions like summarise() and mutate(). Jul 23, 2025 · The mutate function is used to apply a function to a single column, while the mutate_all function can be used to apply the same function to all columns. The mutate_at function can be used to apply different functions to different columns. Discover how to utilize `mutate (across ())` with external functions in R that reference other variables in a dataframe without needing to pass additional arguments.
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