.is_reserved_operator

Some symbols are reserved for the special syntax implemented by the package.
This function checks if a given node (i.e., a call) is one or more of
<code>+ - * |</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

.is_reserved_operator function

<dl><dt>node</dt>
<dd>List element</dd>
<dt>check_sym</dt>
<dd>If NULL (default), check all reserved operators. Otherwise,
a string that will be converted to a symbol.</dd></dl>

Arguments

Check if node is a contrast-manipulation operator — .is_reserved_operator

<dl>

<dt>node</dt>
<dd>List element</dd>


<dt>check_sym</dt>
<dd>If NULL (default), check all reserved operators. Otherwise,
a string that will be converted to a symbol.</dd>

</dl>

.is_reserved_operator: Check if node is a contrast-manipulation operator

Description

Usage

Value

Arguments