
The formula
attributes of the pdMat
elements of
x
are extracted and returned as a list, in case
asList=TRUE
, or converted to a single one-sided formula when
asList=FALSE
. If the pdMat
elements do not have a
formula
attribute, a NULL
value is returned.
# S3 method for pdBlocked
formula(x, asList, …)
an object inheriting from class "pdBlocked"
,
representing a positive definite block diagonal matrix.
an optional logical value. If TRUE
, a list with
the formulas for the individual block diagonal elements of
x
is returned; else, if FALSE
, a one-sided formula
combining all individual formulas is returned. Defaults to
FALSE
.
some methods for this generic require additional arguments. None are used in this method.
a list of one-sided formulas, or a single one-sided formula, or
NULL
.
# NOT RUN {
pd1 <- pdBlocked(list(~ age, ~ Sex - 1))
formula(pd1)
formula(pd1, asList = TRUE)
# }
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