Matrix.pdMat {nlme}

Assign Matrix to a pdMat or pdBlocked Object

Description

The positive-definite matrix represented by object is replaced by value. If the original matrix had row and/or column names, the corresponding names for value can either be NULL, or a permutation of the original names.

Usage

## S3 replacement method for class 'pdMat'
matrix(object) <- value
## S3 replacement method for class 'pdBlocked'
matrix(object) <- value

Arguments

object

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

value

a matrix with the new values to be assigned to the positive-definite matrix represented by object. Must have the same dimensions as as.matrix(object).

Value

a pdMat or pdBlocked object similar to object, but with its coefficients modified to produce the matrix in value.

Author(s)

José Pinheiro and Douglas Bates [e-mail]

See Also

pdMat, "matrix<-"

Examples

class(pd1 <- pdSymm(diag(3))) # "pdSymm" "pdMat"
matrix(pd1) <- diag(1:3)
pd1