contr.simplex

Generates orthonormal (orthogonal and normalized) contrasts. Each row is the vertex of an N-dimensional simplex. The only exception are contrasts for the 2-level case, which return 1 and -1.

Generates and evaluates D, I, A, Alias, E, T, and G optimal designs. Supports generation and evaluation of blocked and split/split-split/.../N-split plot designs. Includes parametric and Monte Carlo power evaluation functions, and supports calculating power for censored responses. Provides a framework to evaluate power using functions provided in other packages or written by the user. Includes a Shiny graphical user interface that displays the underlying code used to create and evaluate the design to improve ease-of-use and make analyses more reproducible. For details, see Morgan-Wall et al. (2021) <doi:10.18637/jss.v099.i01>.

Tyler Morgan-Wall

skpr

Design of Experiments Suite: Generate and Evaluate Optimal
Designs

George Khoury

contr.simplex function

<dl><dt>n</dt>
<dd>The number of levels in the catagorical variable. If this is a factor or character vector, <code>n</code> will be <code>length(n)</code></dd>
<dt>size</dt>
<dd>Default <code>1</code>. The length of the simplex vector.</dd></dl>

Arguments

Orthonormal Contrast Generator — contr.simplex

<dl>

<dt>n</dt>
<dd>The number of levels in the catagorical variable. If this is a factor or character vector, <code>n</code> will be <code>length(n)</code></dd>


<dt>size</dt>
<dd>Default <code>1</code>. The length of the simplex vector.</dd>

</dl>

contr.simplex: Orthonormal Contrast Generator

Description

Usage

Value

Arguments

Examples