.process_code_by

Handles the <code>code_by</code> parameter and checks to make sure whether we can
safely drop trends or not. Also handles any usage of <code><a href="/link/I()?package=contrastable&version=1.0.2" data-mini-rdoc="contrastable::I()">I()</a></code>

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

.process_code_by function

<dl><dt>formula</dt>
<dd>Formula used to set contrast</dd>
<dt>params</dt>
<dd>Parameter list</dd>
<dt>env</dt>
<dd>Not used</dd>
<dt>verbose</dt>
<dd>Whether to throw the warning about invalid <code>-</code> usage</dd></dl>

Arguments

Handles the <code>code_by</code> parameter and checks to make sure whether we can
safely drop trends or not. Also handles any usage of <code><a href='https://rdrr.io/r/base/AsIs.html'>I()</a></code>

Process code_by — .process_code_by

<dl>

<dt>formula</dt>
<dd>Formula used to set contrast</dd>


<dt>params</dt>
<dd>Parameter list</dd>


<dt>env</dt>
<dd>Not used</dd>


<dt>verbose</dt>
<dd>Whether to throw the warning about invalid <code>-</code> usage</dd>

</dl>

.process_code_by: Process code_by

Description

Usage

Value

Arguments