Construct contrasts comparing each factor level against the average of the other levels.
Usage
one_against_all_contrast(levels, facname, where = NULL)
Arguments
- levels
A vector of factor levels to be compared.
- facname
A character string specifying the name of the factor containing the supplied levels.
- where
An optional formula specifying the subset over which the contrast is computed.
Value
A contrast_set object containing contrasts comparing each factor level against the average of the other levels.
Examples
fac <- factor(rep(c("A", "B", "C"), 2))
con <- one_against_all_contrast(levels(fac), "fac")