Creates all the possible pairwise contrasts between the unique elements of a vector.
createPairwiseContrasts(x, sep = "-", reverseLevs = TRUE)
| x | Vector to be combined in pairs.  | 
    
|---|---|
| sep | Separator of resulting contrasts.  | 
    
| reverseLevs | Reverse levels before contrasts? Defaults to TRUE  | 
    
A character vector containing all the possible pairwise contrasts.