x'
> Cc: r-help@r-project.org
> Subject: RE: [R] Confirmatory factor analysis problems using sem package
> (works in Amos)
>
> Thanks John. Can I ask under what function you call optim/nlm? I cannot
> see how this is done by examining sem. Thanks,
>
> -Solomon
>
Cc: r-help@r-project.org
> Subject: RE: [R] Confirmatory factor analysis problems using sem package
> (works in Amos)
>
> Dear Solomon,
>
> When I originally programmed the sem() function, I used optim() and
> experimented with the different methods provided, settling on &q
> "SANN"),...) for example?
>
> Thank you very much,
>
> -Solomon
>
> > -Original Message-
> > From: John Fox [mailto:j...@mcmaster.ca]
> > Sent: Friday, May 22, 2009 6:25 AM
> > To: 'S. Messing'
> > Cc: r-help@r-project.org
&g
---
> From: John Fox [mailto:j...@mcmaster.ca]
> Sent: Friday, May 22, 2009 6:25 AM
> To: 'S. Messing'
> Cc: r-help@r-project.org
> Subject: RE: [R] Confirmatory factor analysis problems using sem package
> (works in Amos)
>
> Dear Solomon,
>
> > -Origina
Dear Solomon,
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On
> Behalf Of S. Messing
> Sent: May-22-09 1:27 AM
> To: r-help@r-project.org
> Subject: [R] Confirmatory factor analysis problems using sem packag
Hello all,
I'm trying to replicate a confirmatory factor analysis done in Amos. The
idea is to compare a one-factor and a two-factor model. I get the following
warning message when I run either model:
"Could not compute QR decomposition of Hessian.
Optimization probably did not converge."
I h
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