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A collection of functions for symbolic computation using 'Ryacas' package for structural equation models. This package includes functions to calculate modelimplied covariance (and correlation) matrix and sampling covariance matrix of functions of variables using the firstorder Taylor approximation. Reference: McArdle and McDonald (1984) <doi:10.1111/j.20448317.1984.tb00802.x>.
Package details 


Author  Mike Cheung [aut, cre] (<https://orcid.org/0000000301130758>) 
Maintainer  Mike Cheung <mikewlcheung@nus.edu.sg> 
License  GPL (>= 2) 
Version  0.1 
URL  https://github.com/mikewlcheung/symsem 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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