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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