rsm.factors
of the rsm object. This function is
used to generate the default formula in a typical call to
rsm.lm
.
formula.rsm.design(object, response)
"rsm.design"
typically created using either
as.rsm.design
or
rsm.design
.
rsm.factor
in the
rsm.design
object. A response variable can be
supplied which is not part of the
rsm.design
object (e.g., a
response on another scale). This is not a character string.
"formula"
that typically will specify a
quadratic response surface model for the
rsm.design
object.
Experimental factors in an rsm design have class
"rsm.factor"
. The
formula returned has all linear quadratic and interaction terms for
these factors, i.e., for the factor design
(A+B+C)^2 + A^2 + B^2 + C^2
a.design <- rsm.design(3) a.df <- cbind(a.design, y = rnorm(18)) formula(a.df) # the following two statements are equivalent rsm.lm(formula(a.df), data = a.df) rsm.lm(a.df)