Hi all, This could be very basic. I want to do exploratory factor analysis but I don't have the data, rather I have the correlation matrix. How do I do this with just the correlation matrix? I know for principal components, I can just find the eigen values. Best regards -- View this message in context: http://r.789695.n4.nabble.com/Factor-analysis-tp3040618p3040618.html Sent from the R help mailing list archive at Nabble.com.
See ?factanal, and ?ability.cov for a worked example. On Fri, 12 Nov 2010, Brima wrote:> > Hi all, > > This could be very basic. I want to do exploratory factor analysis but I > don't have the data, rather I have the correlation matrix. How do I do this > with just the correlation matrix? I know for principal components, I can > just find the eigen values. > > Best regards > -- > View this message in context: http://r.789695.n4.nabble.com/Factor-analysis-tp3040618p3040618.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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. >-- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
Hello On Sat, Nov 13, 2010 at 7:57 AM, Brima <adamsteve2000 at yahoo.com> wrote:> > Hi all, > > This could be very basic. I want to do exploratory factor analysis but I > don't have the data, rather I have the correlation matrix. How do I do this > with just the correlation matrix? I know for principal components, I can > just find the eigen values. >http://www.unt.edu/rss/class/Jon/R_SC/Module7/M7_PCAandFA.R Search for 'psych'. Regards Liviu> Best regards > -- > View this message in context: http://r.789695.n4.nabble.com/Factor-analysis-tp3040618p3040618.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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. >-- Do you know how to read? http://www.alienetworks.com/srtest.cfm http://goodies.xfce.org/projects/applications/xfce4-dict#speed-reader Do you know how to write? http://garbl.home.comcast.net/~garbl/stylemanual/e.htm#e-mail