One-way Contrast — oneway_contrast • fmridesign

Create a one-way contrast specification

Usage

oneway_contrast(A, name, where = NULL)

Arguments

A: A formula specifying the contrast
name: The name of the contrast
where: An optional formula specifying the subset over which the contrast is computed.

Value

A oneway_contrast_spec object that can be used to generate contrast weights

See also

interaction_contrast for testing interactions, pair_contrast for pairwise comparisons

Examples

# Create a one-way contrast for a factor 'basis'
con <- oneway_contrast(~ basis, name = "Main_basis")

# Create a one-way contrast with a 'where' clause
con <- oneway_contrast(~ basis, name = "Main_basis",
                      where = ~ block == 1)