[R] Creating covariance matrices for simple and complex factor structure

[William Revelle]

At 6:00 PM +0000 2/5/11, LOUDERMILK, BRANDON wrote:
>Hello all,
>
>I'm trying to create covariance matrices that, when processed via 
>CFA methods (in the sem package) will produce exact fit with simple 
>structure down to poor fit with cross loadings.  What is the best 
>way to do this?  I don't really need to have the exact loop code, 
>but maybe an explanation of how to make a few of the matrices or an 
>explanation of the rationale behind performing this task would be of 
>benefit.
>
>Thanks in advance.
>
>	[[alternative HTML version deleted]]

Brandon,

  See some of the simulation functions in the psych package.  e.g., 
sim.congeneric, sim.structure,  sim. circumplex, sim.simplex, etc.

Bill


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