nlme (version 3.1-144)

as.matrix.pdMat: Matrix of a pdMat Object

Description

This method function extracts the positive-definite matrix represented by x.

Usage

# S3 method for pdMat
as.matrix(x, …)

Arguments

x

an object inheriting from class "pdMat", representing a positive-definite matrix.

…

further arguments passed from other methods.

Value

a matrix corresponding to the positive-definite matrix represented by x.

References

Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.

See Also

pdMat, corMatrix

Examples

# NOT RUN {
as.matrix(pdSymm(diag(4)))
# }