[R] data.frame error using sem package

From: Suzanne Witt <stwitt_at_wisc.edu>
Date: Fri 07 Oct 2005 - 05:38:51 EST


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.

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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