Return a matrix of independent contrasts – a level for each term.
Usage
contr.independent(n, contrasts = TRUE)
Arguments
- n
a vector of levels for a factor, or the number of levels
- contrasts
logical indicating whether contrasts should be computed
Value
A matrix with n rows and k columns, with k = n if contrasts = TRUE and k = n
if contrasts = FALSE.
Examples
contr.independent(c(1, 2))
#> [,1] [,2]
#> [1,] 1 0
#> [2,] 0 1
contr.independent(c(1, 2, 3))
#> [,1] [,2] [,3]
#> [1,] 1 0 0
#> [2,] 0 1 0
#> [3,] 0 0 1