coef.pdIdent {nlme} | R Documentation |
This method function extracts the coefficients associated with the
positive-definite matrix represented by object
.
coef(object, unconstrained, ...) coef(object) <- value
object |
an object inheriting from class pdIdent ,
representing a multiple of the identity positive-definite matrix. |
unconstrained |
a logical value. If TRUE the logarithm of
the standard deviation corresponding to the variance-covariance
matrix represented by object is returned. If FALSE the
standard deviation is returned. Defaults to TRUE . |
value |
a vector with the replacement values for the coefficients
associated with object . It must be a numeric value given in
unconstrained form.
|
... |
some methods for this generic require additional arguments. None are used in this method. |
a vector with the coefficients corresponding to object
.
On the left side of an assignment, sets the values of the coefficients
of object
to value
. Object
must be initialized (using
Initialize
) before new values can be assigned to its
coefficients.
Jose Pinheiro and Douglas Bates
coef(pdIdent(diag(3)))