get.formula.list: Generates list of formula from a list of models.
Description
A helper function for sem.missing.paths that retrieves a formula list from a list of structured equations.
Usage
get.formula.list(modelList, add.vars)
Arguments
modelList
a list of regressions representing the structural equation model.
add.vars
a vector of additional variables whose independence claims should be evaluated, but which do not appear in the model list.
Value
Returns a list of objects of class formula.