nlme: needUpdate.modelStruct – R documentation

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needUpdate.modelStruct

Check if a modelStruct Object Needs Updating

Description

This method function checks if any of the elements of object needs to be updated. Updating of objects usually takes place in iterative algorithms in which auxiliary quantities associated with the object, and not being optimized over, may change.

Usage

## S3 method for class 'modelStruct'
needUpdate(object)

Arguments

object

an object inheriting from class "modelStruct", representing a list of model components, such as corStruct and varFunc objects.

Value

a logical value indicating whether any element of object needs to be updated.

Author(s)

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

Examples

lms1 <- lmeStruct(reStruct = reStruct(pdDiag(diag(2), ~age)),
   varStruct = varPower(form = ~age))
needUpdate(lms1)

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