I have looked on the internet and within R itself but I cannot seem to find the link or location to download the package.
Some functions are listed here:
http://www.gastonsanchez.com/visually-enforced/how-to/2012/06/17/PCA-in-R/
The stats package comes with R natively, so you should have the prcomp and princomp functions already available.
The FactoMineR package is on CRAN. Your R installation is probably set up to install packages from CRAN. Try the following and see if it works:
if(!require(FactoMineR)){install.packages("FactoMineR")}
And then the following should produce output:
library(FactoMineR)
data(decathlon)
PCA(decathlon, quanti.sup = 11:12, quali.sup=13)
The library ADE4 is specialized for Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences. There is the function dudi.pca for Principle Component Analysis.
https://cran.r-project.org/web/packages/ade4/ade4.pdf
there are many tutorials in particular for pca:
https://pbil.univ-lyon1.fr/R/pdf/course2.pdf
it has been developing a graphical interface library : ade4TkGUI
http://pbil.univ-lyon1.fr/ade4TkGUI/home.php?lang=eng
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