[R] PCA analysis and bootstraped loadings

stephen sefick ssefick at gmail.com
Mon Apr 13 21:38:17 CEST 2015


Please search the mailing list archives for this, or type bootstrapped PCA
R into google. Please provide a minimal self-contained example of what you
are trying to solve. Please read the posting guide that is referenced at
the end of every email.
kind regards,


On Mon, Apr 13, 2015 at 11:07 AM, Efstathia Defteraiou <
Efstathia.Defteraiou at student.uibk.ac.at> wrote:

> Dear All,
> I am relatively new in R.
> Im working with the 'psych' package and 'principal' function.
> I would like to know how to generate the bootstraped conf.intervals for
> loadings,
> looking for sth similar to setting 'n.iter' argument for the 'fa' function.
> If in 'psych' can't work and suggest me the 'boot' package please provide
> specific Rscript since I don't understand the commands and arguments that
> have to be used before calling the function 'boot'( what are indices? what
> to define as what inside function(){})
> The names Im using are included in the following code:
> 'newdata3.1' is my data and provided as data.frame
> makingtheanalysis3.1 <-principal(newdata3.1, nfactors =3,
>                               residuals = FALSE,
>                               covar=FALSE,rotate="varimax",scores=TRUE)
> I am sorry for not providing a specific code but my data are too large
> Any Help appreciated
> Cheers!
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> and provide commented, minimal, self-contained, reproducible code.

Stephen Sefick
Auburn University
Biological Sciences
331 Funchess Hall
Auburn, Alabama
sas0025 at auburn.edu

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