nlme: solve.reStruct – R documentation

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solve.reStruct

Apply Solve to an reStruct Object

Description

Solve is applied to each pdMat component of a, which results in inverting the positive-definite matrices they represent.

Usage

## S3 method for class 'reStruct'
solve(a, b, ...)

Arguments

`a`	an object inheriting from class `"reStruct"`, representing a random effects structure and consisting of a list of `pdMat` objects.
`b`	this argument is only included for consistency with the generic function and is not used in this method function.
`...`	some methods for this generic require additional arguments. None are used in this method.

Value

an reStruct object similar to a, but with the pdMat components representing the inverses of the matrices represented by the components of a.

Author(s)

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

Examples

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

nlme

Linear and Nonlinear Mixed Effects Models

v3.1-152

GPL (>= 2) | file LICENCE

Authors

José Pinheiro [aut] (S version), Douglas Bates [aut] (up to 2007), Saikat DebRoy [ctb] (up to 2002), Deepayan Sarkar [ctb] (up to 2005), EISPACK authors [ctb] (src/rs.f), Siem Heisterkamp [ctb] (Author fixed sigma), Bert Van Willigen [ctb] (Programmer fixed sigma), Johannes Ranke [ctb] (varConstProp()), R-core [aut, cre]

Initial release

2021-02-03