.is_valid_contrmat

Sometimes a user might pass a matrix that can't actually be used, in which
case we can avoid some calculations by stopping earlier.

internal

Quickly set and summarize contrasts for factors prior to regression analyses. Intended comparisons, baseline conditions, and intercepts can be explicitly set and documented without the user needing to directly manipulate matrices. Reviews and introductions for contrast coding are available in Brehm and Alday (2022)<doi:10.1016/j.jml.2022.104334> and Schad et al. (2020)<doi:10.1016/j.jml.2019.104038>.

Thomas Sostarics

contrastable

Consistent Contrast Coding for Factors

.is_valid_contrmat function

<dl><dt>contrast_matrix</dt>
<dd>Contrast matrix</dd></dl>

Arguments

Check if valid contrast — .is_valid_contrmat

<dl>

<dt>contrast_matrix</dt>
<dd>Contrast matrix</dd>

</dl>

.is_valid_contrmat: Check if valid contrast

Description

Usage

Value

Arguments