key()
returns a list of symbols; key_vars()
gives a character vector.
key(x)
key_vars(x)
A tsibble.
key(pedestrian)
#> [[1]]
#> Sensor
#>
key_vars(pedestrian)
#> [1] "Sensor"
key(tourism)
#> [[1]]
#> Region
#>
#> [[2]]
#> State
#>
#> [[3]]
#> Purpose
#>
key_vars(tourism)
#> [1] "Region" "State" "Purpose"