Convert a factor to index

Convert a given factor to an accepted index

Usage

use_index(x)

Arguments

x

A character or a factor to be used as index

See also

You can use evaluate_index() to evaluate how good an index is. For the inverse look at batch_names().

Examples

plates <- c("P1", "P2", "P1", "P2", "P2", "P3", "P1", "P3", "P1", "P1")
use_index(plates)
#> $P1
#> [1]  1  3  7  9 10
#> 
#> $P2
#> [1] 2 4 5
#> 
#> $P3
#> [1] 6 8
#>