On Fri, 17 Dec 2004 13:07:08 -0500, Doran, Harold <[EMAIL PROTECTED]> wrote: > You can use factanal to do the analysis. The polychor() package will > give you polychorics. You can then the do the factor analysis on this > correlation matrix. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Tom Denson > Sent: Friday, December 17, 2004 12:31 PM > To: [EMAIL PROTECTED] > Subject: [R] Factor analysis with dichotomous variables > > Hello, > > I would like to conduct an exploratory factor analysis with dichotomous > data. Do any R routines exist for this purpose? I recall reading > something about methods with tetrachoric correlations. > > Any help would be appreciated.
You may also want to consider the routines in MCMCpack (MCMCordfactanal and MCMCmixfactanal), depending on your application. Chris -- Chris Lawrence - http://blog.lordsutch.com/ ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
