Re: [R] PCA analysis and bootstraped loadings

2015-04-14 Thread Efstathia Defteraiou
Dear All, Thank You for the quick responses. Managed to solve my problem through: http://www.faculty.biol.ttu.edu/strauss/multivar/R/SamplePCABootstrap.R.txt or http://r.789695.n4.nabble.com/bootstrapped-eigenvector-method-following-prcomp-td877655.html Used the first one however, code is too long

Re: [R] PCA analysis and bootstraped loadings

2015-04-13 Thread William Revelle
psych does not currently have bootstrapped confidence intervals for loadings. That is a reasonable request and I will try to add it, perhaps in the “real soon now” version of 1.5.4 (almost finished), perhaps in the next release, Bill > On Apr 13, 2015, at 2:38 PM, stephen sefick wrote: > > H

Re: [R] PCA analysis and bootstraped loadings

2015-04-13 Thread stephen sefick
Hi, 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, Stephen On Mon, Apr 13, 2015 at

[R] PCA analysis and bootstraped loadings

2015-04-13 Thread Efstathia Defteraiou
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