Extract corStruct Log-Determinant

Usage

logDet(object, covariate)

Arguments

object an object inheriting from class corStruct, representing a correlation structure.
covariate an optional covariate vector (matrix), or list of covariate vectors (matrices), at which values the correlation matrix, or list of correlation matrices, are to be evaluated. Defaults to getCovariate{object}.

Description

This method function extracts the logarithm of the determinant of a square-root factor of the correlation matrix associated with object, or the sum of the log-determinants of square-root factors of the list of correlation matrices associated with object.

Value

the log-determinant of a square-root factor of the correlation matrix associated with object, or the sum of the log-determinants of square-root factors of the list of correlation matrices associated with object.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

logLik.corStruct, corMatrix.corStruct

Examples

library(lme)
cs1 <- corAR1(0.3)
logDet(cs1, covariate = 1:4)

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