fac.design
.
Primarily designed for use with
Subscript
.
is.fac.design(x)
is.fac.design
tests whether
x
is a
fac.design
object.
That is, it returns
TRUE
if
x
satisfies a condition for
fac.design
and
FALSE
otherwise.
The testing is not exhaustive, and does not guarantee that
x
satisfies all of the properties (loosely) required of a
fac.design
object.