Arguments
- data
a numeric vector
- values
a numeric vector containing the values whose index is returned
Value
Index of the values in data. In case, data does
not contain index, NULL is returned.
Examples
# returns index of 21
ds_rindex(mtcars$mpg, 21)
#> [1] 1 2
# returns NULL
ds_rindex(mtcars$mpg, 22)
#> NULL