Re: [R] computationally singular and lack of variance parameters in SEM

2009-05-01 Thread John Fox
Dear Elizabeth, > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of Elizabeth Pringle > Sent: May-01-09 6:59 PM > To: r-help@r-project.org > Subject: [R] computationally singular and lack of variance parameters

[R] computationally singular and lack of variance parameters in SEM

2009-05-01 Thread Elizabeth Pringle
Hi all, I am trying to set up a simple path analysis in the SEM package, but I am having some trouble. I keep getting the following error message or something similar with my model, and I'm not sure what I'm doing wrong: Error in solve.default(C) : system is computationally singular: reciprocal