confregion

Given the parameters of the confidence ellipse in the space of covariate
coefficients, it returns the confidence region of the effect.

internal

An implementation of the ternary plot for interpreting regression
coefficients of trinomial regression models, as proposed in Santi, Dickson
and Espa (2019) <doi:10.1080/00031305.2018.1442368>. Ternary plots can be
drawn using either 'ggtern' package (based on 'ggplot2') or 'Ternary'
package (based on standard graphics). The package and its features are
illustrated in Santi, Dickson, Espa and Giuliani (2022)
<doi:10.18637/jss.v103.c01>.

Flavio Santi

plot3logit

Ternary Plots for Trinomial Regression Models

Maria Michela Dickson

Giuseppe Espa

Diego Giuliani

confregion function

<dl><dt>mu</dt>
<dd>centre of the ellipse.</dd>
<dt>Sig</dt>
<dd>covariance matrix of the ellipse.</dd>
<dt>conf</dt>
<dd>confidence level of the region.</dd>
<dt>npoints</dt>
<dd>number of points of the border.</dd></dl>

Arguments

It computes the confidence region in the ternary space — confregion

<dl>

<dt>mu</dt>
<dd>centre of the ellipse.</dd>


<dt>Sig</dt>
<dd>covariance matrix of the ellipse.</dd>


<dt>conf</dt>
<dd>confidence level of the region.</dd>


<dt>npoints</dt>
<dd>number of points of the border.</dd>

</dl>

confregion: It computes the confidence region in the ternary space

Description

Usage

Value

Arguments