| Matrix.pdMat {nlme} | R Documentation |
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.
## S3 method for class 'pdMat': matrix(object) <- value
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). |
a pdMat object similar to object, but with its
coefficients modified to produce the matrix in value.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
pd1 <- pdSymm(diag(3)) matrix(pd1) <- diag(1:3) pd1