plotellipse: Plot confidence ellipses

In SensoMineR: Sensory Data Analysis

Plot confidence ellipses

Description

Plot confidence ellipses.

Usage

plotellipse(mat, alpha = 0.05, coord = c(1,2), eig, cex = 1, 
    color = NULL, title = NULL, graph.type = c("ggplot","classic"))

Arguments

mat	Matrix with all the points
alpha	the confidence level of the ellipses
coord	a length 2 vector specifying the components to plot
eig	a matrix with the component of the factor analysis (in row) and the eigenvalues, the inertia and the cumulative inertia for each component. Typically, the eig output of the construct.axes function
cex	cf. function par in the graphics package
color	a vector with the colors used; by default there are 35 colors defined
title	string corresponding to the title of the graph you draw (by default NULL and a title is chosen)
graph.type	a character that gives the type of graph used: "ggplot" or "classic"

Author(s)

Francois Husson

Examples

## Not run: 
data(chocolates)
donnee <- cbind.data.frame(sensochoc[,c(1,4,5:18)])
axe <- construct.axes(donnee, scale.unit = TRUE)
simul <- simulation(axe)
plotellipse (simul, alpha = 0.05, eig = signif(axe$eig,4))
#######################################
donnee <- cbind.data.frame(sensochoc[,c(1,4,5:18)])
axe <- construct.axes(donnee, group = c(6,8), 
    name.group = c("A-F","T-S"),scale.unit = TRUE)
simul <- simulation(axe, nbgroup = (ncol(axe$partiel)-2)/(ncol(axe$moyen)-2))
plotellipse (simul, alpha = 0.05, eig = signif(axe$eig,4))

## End(Not run)

SensoMineR documentation built on May 29, 2024, 5:01 a.m.