Convert multiple selections into a factor

Convert multiple selection information into a factor, typically for use as a covariate or for coloring.

Usage

multiSelectionToFactor(selected, all.names)

Arguments

selected

A named list of character vectors, containing the names of selected observations for different selections. Vectors for different selections may overlap.

all.names

Character vector of all observations.

Value

A factor containing the set(s) to which each observation is assigned. Multiple sets are encoded as comma-separated strings. Unselected observations are listed as "unselected".

Author

Aaron Lun

Examples

multiSelectionToFactor(list(active=c("A", "B"), 
    saved1=c("B", "C"), saved2=c("D", "E", "F")),
    all.names=LETTERS[1:10])
#>             A             B             C             D             E 
#>        active active,saved1        saved1        saved2        saved2 
#>             F             G             H             I             J 
#>        saved2    unselected    unselected    unselected    unselected 
#> Levels: active active,saved1 saved1 saved2 unselected