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On 06/08/2011 11:56 PM, R Help wrote: > Yes, that is the difference. For the last SEM I built I fixed the > factor variances to 1, and I think that's what I want to do for the...
On 07/20/2012 10:35 PM, Andrew Miles wrote: > Hello! > > I am trying to reproduce (for a publication) analyses that I ran > several months ago using lavaan, I'm not sure which version, probably > 0.4-12. A sample...
Dear Laura, John is correct. The error is produced by the sem() function in the lavaan package. The reason is that you did not use proper names for the function arguments. The correct call should be: sem.cdu= sem(cdu...
On 03/28/2011 04:18 AM, jouba wrote: > > Jeremy thanks a lot for your response I have read sem package help > and I currently reading the help of lavaan I see that there is also > an other function called...
> I am trying to use the cfa command in the lavaan package to run a CFA > however I am unsure over a couple of issues. > > I have @25 dichotomous variables, 300 observations and an EFA on a > training dataset suggests...
Dear Alain, As for the first error ("sample covariance can not be inverted"): Mike is right: with only 10 observations and 16 variables, the ML estimation of the sample cov produces a covariance matrix that is not positive definite, and...
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