Extract reStruct Log-Determinants — logDet.reStruct • nlme

Calculates, for each of the pdMat components of object, the logarithm of the determinant of a square-root factor.

# S3 method for class 'reStruct'
logDet(object, ...)

Arguments

object: an object inheriting from class "reStruct", representing a random effects structure and consisting of a list of pdMat objects.
...: some methods for this generic require additional arguments. None are used in this method.

Value

a vector with the log-determinants of square-root factors of the pdMat components of object.

Author

José Pinheiro

See also

reStruct, pdMat, logDet

Examples

rs1 <- reStruct(list(A = pdSymm(diag(1:3), form = ~Score),
  B = pdDiag(2 * diag(4), form = ~Educ)))
logDet(rs1)
#>         B         A 
#> 1.3862944 0.8958797