A list containing three data.frames and three formula, one for each.
x data.frame
containing the variables on the right-hand side
of the model formula.
y data.frame
containing the variables on the left-hand side
of the model formula.
g data.frame
containing the variables, if any, after
the conditioning bar |
of the model formula.
x.formula formula
containing the right-hand side
of the model formula.
y.formula formula
containing the left-hand side
of the model formula.
g.formula formula
containing the formula after the
conditioning bar |
of the model formula.