nlme (version 3.1-1)

matrix<-.pdMat: Assign Matrix to a pdMat 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

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 object similar to object, but with its coefficients modified to produce the matrix in value.

See Also

pdMat

Examples

library(nlme)
pd1 <- pdSymm(diag(3))
matrix(pd1) <- diag(1:3)
pd1

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