Extract Correlation Matrix from Components of an reStruct Object — corMatrix.reStruct • nlme

This method function extracts the correlation matrices corresponding to the pdMat elements of object.

# S3 method for class 'reStruct'
corMatrix(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 list with components given by the correlation matrices corresponding to the elements of object.

Author

José Pinheiro and Douglas Bates bates@stat.wisc.edu

See also

as.matrix.reStruct, corMatrix, reStruct, pdMat

Examples

rs1 <- reStruct(pdSymm(diag(3), ~age+Sex, data = Orthodont))
corMatrix(rs1)
#> [[1]]
#>             (Intercept) age SexFemale
#> (Intercept)           1   0         0
#> age                   0   1         0
#> SexFemale             0   0         1
#> attr(,"stdDev")
#> (Intercept)         age   SexFemale 
#>           1           1           1 
#>