On Wed, Oct 14, 2009 at 7:00 PM, Tiger Guo <tigerguou...@gmail.com> wrote: > Hello, > > > Can R do factor analysis using eigenvalue greater than one to automatically > determine the number > of factors to extract?
You could write code automate this, but it's easy enough to look at the scree plot and use that as to identify the number of factors that meet this criterion. > > I am afraid that R cannot provide the function we want. Unlikely! R is also a programing language, so it if the function you want doesn't exist yet you can write it yourself. But I can use R to > write a function to do the specific factor analysis. Because the functions > needed for > developing the factor analysis is provided by R, it should be easy to write > the factor analysis. Yes, I'm confident you will be able to do the analysis in R, although... I'm not sure exactly what it is that you want to do. > > I appreciate if someone can give me some comment about the specific factor > analysis. I'm not sure what "specific factor analysis" means. I personally use the fa() function in the psych package. If your concern is with determining the number of factors to extract, you may be interested in the fa.parallel function in the same package. -Ista > > Thanks. > > > Gencheng Guo > > ECE, University of Alberta, > Edmonton, Alberta, Canada > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ 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.