nlme (version 3.1-130)

as.matrix.pdMat: Matrix of a pdMat Object

Description

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

Usage

"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

as.matrix(pdSymm(diag(4)))