Re: [R] data.frame error using sem package

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Fri 07 Oct 2005 - 05:49:05 EST

Suzanne Witt wrote:
> I keep getting this error when I try to use the sem package. I and
> another person who has successfully used the sem package for similar
> analysis (fMRI effective connectivity) cannot figure out what is
> wrong with my code. I would appreciate any suggestions.

It is almost impossible to help if you do not specify a toy example that shows how you produced that error message. Please read the psoting guide which tells you how to specify such examples most appropriately in order to get a good answer.

Uwe Ligges

> The error message:
>
> Error in data.frame(object$coeff, se, z, 2 * (1 - pnorm(abs(z))),
> par.code) :
> arguments imply differing number of rows: 6, 0
> In addition: Warning message:
> Could not compute QR decomposition of Hessian.
> Optimization probably did not converge.
> in: sem.default(ram = ram, S = S, N = N, param.names = pars,
> var.names = vars,
>
>
> Thank you,
>
> Suzanne
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Oct 07 05:55:31 2005

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