Returns index of values.

ds_rindex(data, values)

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

ds_rindex(mtcars$mpg, 21)
#> [1] 1 2
ds_rindex(mtcars$mpg, 22)
#> NULL