fac.aov. This function is
used to generate the default formula in a typical call to
fac.aov.
formula.fac.design(object, response)
"fac.design", typically created using
design.digest,
fac.design, or
as.fac.design.
fac.design object.
formula that typically will specify an effect
saturated model for the
fac.design object.
The effect saturated model is generated as a fully crossed model if
there are fewer than seven factors (e.g., ` y~A * B * C * D') and a
crossed model of order 3 for seven or more factors (e.g., ` y~.^3' ). The
presence of a factor named
"Quad" indicates that there are
center points and a term
"Quad" that does not interact with any model
terms will be added to the model. If there is a blocking factor, it
will be added as the first term in the formula
(e.g., `y ~ Block1 + A*B*C*D + Quad').
a.design <- design.digest('ff0816')
formula(a.design)
formula(buffer.df)
# the following two statements are equivalent
fac.aov(formula(buffer.df),data=buffer.df)
fac.aov(buffer.df)