getGroupsFormula.reStruct {nlme}R Documentation

Extract reStruct Grouping Formula

Description

The names of the object components are used to construct a one-sided formula, or a named list of formulas, depending on the value of asList. The components of the returned list are ordered from outermost to innermost level.

Usage

getGroupsFormula(object, asList)

Arguments

object an object inheriting from class reStruct, representing a random effects structure and consisting of a list of pdMat objects.
asList an optional logical value. If TRUE the returned value with be a list of formulas; else, if FALSE the returned value will be a one-sided formula. Defaults to FALSE.

Value

a one-sided formula, or a list of one-sided formulas, with the grouping structure associated with object.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

reStruct, getGroups

Examples

rs1 <- reStruct(list(A = pdDiag(diag(2), ~age), B = ~1))
getGroupsFormula(rs1)

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