as.matrix.pdMat {nlme} | R Documentation |
This method function extracts the positive-definite matrix represented
by x
.
## S3 method for class 'pdMat' as.matrix(x, ...)
x |
an object inheriting from class |
... |
further arguments passed from other methods. |
a matrix corresponding to the positive-definite matrix represented by
x
.
Jose Pinheiro and Douglas Bates bates@stat.wisc.edu
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.
as.matrix(pdSymm(diag(4)))