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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:
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:
An alternative it to explicitly specify the package in the call using
the :: operator:
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).
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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