Here are answers to some common questions about ade4 (more to come soon).
ade4?The easiest way to install ade4 is to use install.packages("ade4") in your R session.
ade4?To install the development version from github:
remotes::install_github("adeverse/ade4")ade4 version I’m using?In your R session, type:
packageDescription("ade4", field="Version")adegraphics?The package adegraphics provides a complete reimplementation of graphical functionalities of ade4. It is based on lattice and provides a convenient way to manage graphics as objects. Moreover, it offers much more flexibility than ade4 to customize your plots.
adegraphics?As adegraphics provides a reimplementation of ade4 graphical functions, many functions have the same name in the two packages. To be sure to use adegraphics functions, adegraphics should be loaded after ade4:
library(ade4)
library(adegraphics)An alternative it to explicitly specify the package in the call using the :: operator:
adegraphics::s.label()s.class function?The ellipses represent the main variation for individuals of a given class. They are based on inertia statistics not on significance levels.
In simple analysis (e.g., dudi.pca), scores for individuals are stored in $li element of the returned object
In simple analysis (e.g., dudi.pca), scores for variables are stored in $co element of the returned object
$l1 and $c1 elements of a dudi ?In simple analysis (e.g., dudi.pca), the $c1 element contains the principal axes (aka “loadings” of the variables) and the $l1 element contains the principal components. The norm of these two elements is equal to 1, which makes them useful for drawing biplots (for example).