as.matrix.reStruct {nlme}R Documentation

Matrices of an reStruct Object

Description

This method function extracts the positive-definite matrices corresponding to the pdMat elements of object.

Usage

## S3 method for class 'reStruct':
as.matrix(x)

Arguments

x an object inheriting from class reStruct, representing a random effects structure and consisting of a list of pdMat objects.

Value

a list with components given by the positive-definite matrices corresponding to the elements of object.

Author(s)

Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu

See Also

as.matrix.pdMat, reStruct, pdMat

Examples

data(Orthodont)
rs1 <- reStruct(pdSymm(diag(3), ~age+Sex, data = Orthodont))
as.matrix(rs1)
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