as.matrix.pdMat {nlme}

R Documentation

Matrix of a pdMat Object

Description

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

Usage

## S3 method for class '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.

Author(s)

José Pinheiro and Douglas Bates bates@stat.wisc.edu

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)))

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