coef.pdMat {nlme} | R Documentation |
This method function extracts the coefficients associated with the
positive-definite matrix represented by object
.
## S3 method for class 'pdMat' coef(object, unconstrained, ...) ## S3 replacement method for class 'pdMat' coef(object, ...) <- value
object |
an object inheriting from class |
unconstrained |
a logical value. If |
value |
a vector with the replacement values for the coefficients
associated with |
... |
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
.
JosÃ© Pinheiro and Douglas Bates
Pinheiro, J.C. and Bates., D.M. (1996) "Unconstrained Parametrizations for Variance-Covariance Matrices", Statistics and Computing, 6, 289-296.
coef(pdSymm(diag(3)))