nlme: update.modelStruct – R documentation

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nlme

update.modelStruct

Update a modelStruct Object

Description

This method function updates each element of object, allowing the access to data.

Usage

## S3 method for class 'modelStruct'
update(object, data, ...)

Arguments

`object`	an object inheriting from class `"modelStruct"`, representing a list of model components, such as `corStruct` and `varFunc` objects.
`data`	a data frame in which to evaluate the variables needed for updating the elements of `object`.
`...`	some methods for this generic require additional arguments. None are used in this method.

Value

an object similar to object (same class, length, and names), but with updated elements.

Note

This method function is primarily used within model fitting functions, such as lme and gls, that allow model components such as variance functions.

Author(s)

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