Create a Set of Contrasts

Construct a list of contrast_spec objects. Nested contrast_set arguments, including results from one_against_all_contrast() or pairwise_contrasts(), are recursively flattened in argument order. Individual specifications and their list names are preserved; names on enclosing sets are not used as prefixes. Empty sets contribute no specifications. Ordinary lists are not flattened; splice those explicitly with do.call(contrast_set, specs).

Usage

contrast_set(...)

Arguments

...

Individual contrast_spec objects or nested contrast_set objects.

Value

A list of contrast_spec objects with class "contrast_set".

Examples

c1 <- contrast(~ A - B, name="A_B")
c2 <- contrast(~ B - C, name="B_C")
contrast_set(c1,c2)
#> 
#> === Contrast Set ===
#> 
#>  Overview:
#>   * Number of contrasts: 2 
#>   * Types of contrasts:
#>     - contrast_formula_spec : 2 
#> 
#>   Individual Contrasts:
#> 
#> [1] A_B (contrast_formula_spec)
#>     Formula: ~A - B
#> 
#> [2] B_C (contrast_formula_spec)
#>     Formula: ~B - C
#> 
contrast_set(c1, one_against_all_contrast(c("A", "B", "C"), "condition"))
#> 
#> === Contrast Set ===
#> 
#>  Overview:
#>   * Number of contrasts: 4 
#>   * Types of contrasts:
#>     - contrast_formula_spec : 1 
#>     - pair_contrast_spec : 3 
#> 
#>   Individual Contrasts:
#> 
#> [1] A_B (contrast_formula_spec)
#>     Formula: ~A - B
#> 
#> [2] con_A_vs_other (pair_contrast_spec)
#>     Formula: ~condition == "A" vs  ~condition != "A"
#> 
#> [3] con_B_vs_other (pair_contrast_spec)
#>     Formula: ~condition == "B" vs  ~condition != "B"
#> 
#> [4] con_C_vs_other (pair_contrast_spec)
#>     Formula: ~condition == "C" vs  ~condition != "C"
#>