| as.matrix.corStruct {nlme} | R Documentation |
Matrix of a corStruct Object
Description
This method function extracts the correlation matrix, or list of
correlation matrices, associated with object.
Usage
## S3 method for class 'corStruct'
as.matrix(x, ...)
Arguments
x |
an object inheriting from class |
... |
further arguments passed from other methods. |
Value
If the correlation structure includes a grouping factor, the returned
value will be a list with components given by the correlation
matrices for each group. Otherwise, the returned value will be a
matrix representing the correlation structure associated with
object.
Author(s)
José Pinheiro and Douglas Bates bates@stat.wisc.edu
References
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York.
See Also
Examples
cst1 <- corAR1(form = ~1|Subject)
cst1 <- Initialize(cst1, data = Orthodont)
as.matrix(cst1)
[Package nlme version 3.1-166 Index]