pdIdent Object Coefficients

Usage

coef(object, unconstrained)
coef(object) <- value

Arguments

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.

Description

This method function extracts the coefficients associated with the positive-definite matrix represented by object.

Value

a vector with the coefficients corresponding to object.

SIDE EFFECTS

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.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

coef.pdMat, pdMat

Examples

library(lme)
coef(pdIdent(diag(3)))

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