| as.matrix.reStruct {nlme} | R Documentation |
This method function extracts the positive-definite matrices
corresponding to the pdMat elements of object.
## S3 method for class 'reStruct': as.matrix(x)
x |
an object inheriting from class reStruct, representing
a random effects structure and consisting of a list of pdMat
objects. |
a list with components given by the positive-definite matrices
corresponding to the elements of object.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com 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.pdMat, reStruct,
pdMat
rs1 <- reStruct(pdSymm(diag(3), ~age+Sex, data = Orthodont)) as.matrix(rs1)