On 3/5/08, phthao05 <[EMAIL PROTECTED]> wrote: > 1) I don't know why PCA rotation function not run although I try many times. > Would you please hepl me and explain how to read the PCA map (both of > rotated and unrotated) in a concrete example.
If you used the example from here [1], there's a typo in the document. It should look like the following: library(psych) fit <- factor.pa(mydata, nfactors=3, rotate="varimax") # rotatE; not rotatION fit # print results Also, there are a _lot_ of rotation methods in GPArotation. Load the package and use in the function above, say, rotate="quartimax". For un-rotated PCA, I'd imagine it would be rotate="none". Liviu [1] http://www.statmethods.net/advstats/factor.html ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
