@rename

Renaming columns follows the same syntax as in R's tidyverse, where the "tidy expression" is new_name = old_name. While the main function to rename columns is @rename(), you can also use @select() if you additionally plan to select only the renamed columns.

using TidierData
using RDatasets

movies = dataset("ggplot2", "movies");

Rename using @rename()

If you only want to rename the columns without selecting them, then this is where @rename() comes in handy. For the sake of brevity, we are selecting the first 5 columns and rows after performing the @rename().

@chain movies begin
    @rename(title = Title, Minutes = Length)
    @select(1:5)
    @slice(1:5)
end

5×5 DataFrame

Row	title	Year	Minutes	Budget	Rating
	String	Int32	Int32	Int32?	Float64
1	$	1971	121	missing	6.4
2	$1000 a Touchdown	1939	71	missing	6.0
3	$21 a Day Once a Month	1941	7	missing	8.2
4	$40,000	1996	70	missing	8.2
5	$50,000 Climax Show, The	1975	71	missing	3.4

Rename using @select()

If you plan to only select those columns that you would like to rename, then you can use @select() to both rename and select the columns of interest.

@chain movies begin
  @select(title = Title, Minutes = Length)
  @slice(1:5)
end

5×2 DataFrame

Row	title	Minutes
	String	Int32
1	$	121
2	$1000 a Touchdown	71
3	$21 a Day Once a Month	7
4	$40,000	70
5	$50,000 Climax Show, The	71

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