Create ID from columns

Creates an ID column by combining values from one or more columns. Unlike add_id(), this produces deterministic IDs based on column values.

Usage

make_id(.data, ..., .id = ".id", .sep = "|")

Arguments

.data

A data frame.

...

Columns to combine into the ID.

.id

Column name for the ID (default: ".id").

.sep

Separator between column values (default: "|").

Value

Data frame with ID column added.

Examples

df <- data.frame(country = c("US", "UK", "US"), year = c(2020, 2020, 2021))
make_id(df, country, year)
#>   .id       country year
#> 1 US|2020  US      2020
#> 2 UK|2020  UK      2020
#> 3 US|2021  US      2021