Aliases: set_names
Keywords:
### ** Examples set_names(1:4, c("a", "b", "c", "d"))
a b c d 1 2 3 4
set_names(1:4, letters[1:4])
a b c d 1 2 3 4
set_names(1:4, "a", "b", "c", "d")
a b c d 1 2 3 4
# If the second argument is ommitted a vector is named with itself set_names(letters[1:5])
a b c d e "a" "b" "c" "d" "e"
# Alternatively you can supply a function set_names(1:10, ~ letters[seq_along(.)])
a b c d e f g h i j 1 2 3 4 5 6 7 8 9 10
set_names(head(mtcars), toupper)
MPG CYL DISP HP DRAT WT QSEC VS AM GEAR CARB Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4 Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4 Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1 Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1 Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2 Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
# If the input vector is unnamed, it is first named after itself # before the function is applied: set_names(letters, toupper)
A B C D E F G H I J K L M N O P Q R S T "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" U V W X Y Z "u" "v" "w" "x" "y" "z"
# `...` is passed to the function: set_names(head(mtcars), paste0, "_foo")
mpg_foo cyl_foo disp_foo hp_foo drat_foo wt_foo qsec_foo
Mazda RX4 21.0 6 160 110 3.90 2.620 16.46
Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02
Datsun 710 22.8 4 108 93 3.85 2.320 18.61
Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44
Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02
Valiant 18.1 6 225 105 2.76 3.460 20.22
vs_foo am_foo gear_foo carb_foo
Mazda RX4 0 1 4 4
Mazda RX4 Wag 0 1 4 4
Datsun 710 1 1 4 1
Hornet 4 Drive 1 0 3 1
Hornet Sportabout 0 0 3 2
Valiant 1 0 3 1
# If length 1, the second argument is recycled to the length of the first: set_names(1:3, "foo")
foo foo foo 1 2 3
set_names(list(), "")
named list()