Re: [R] Error messages when attempting to calculate polychoric correlation matrices using the psych package

2012-10-02 Thread Kevin Cheung
elps, John --- John Fox Senator McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-pr

Re: [R] Error messages when attempting to calculate polychoric correlation matrices

2012-10-01 Thread John Fox
-boun...@r-project.org] > On Behalf Of Kevin Cheung > Sent: Monday, October 01, 2012 12:19 PM > To: 'r-help@r-project.org' > Subject: [R] Error messages when attempting to calculate polychoric > correlation matrices > > Dear R users, > > I am a psychol

[R] Error messages when attempting to calculate polychoric correlation matrices

2012-10-01 Thread Kevin Cheung
Dear R users, I am a psychology postgraduate student who is relatively new to using R. I am currently developing a psychometric scale and have run into a few problems when using R to calculate a polychoric correlation matrix for my dataset. I am trying to produce a polychoric correlation matrix