| logDet.pdMat {nlme} | R Documentation |
This method function extracts the logarithm of the determinant of a
square-root factor of the positive-definite matrix represented by
object.
## S3 method for class 'pdMat': logDet(object, ...)
object |
an object inheriting from class pdMat, representing
a positive definite matrix. |
... |
some methods for this generic require additional arguments. None are used in this method. |
the log-determinant of a square-root factor of the positive-definite
matrix represented by object.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
pd1 <- pdSymm(diag(1:3)) logDet(pd1)