nlme (version 3.1-19)

update.nlme: Update an nlme Object

Description

The non-missing arguments in the call to the update.nlme method replace the corresponding arguments in the original call used to produce object and nlme is used with the modified call to produce an updated fitted object.

Usage

## S3 method for class 'nlme':
update(object, model, data, fixed, random, groups, start,
       correlation, weights, subset, method, na.action, naPattern,
       control, verbose, \dots)

Value

an updated nlme object.

See Also

nlme

Examples

data(Loblolly)
fm1 <- nlme(height ~ SSasymp(age, Asym, R0, lrc),
            data = Loblolly,
            fixed = Asym + R0 + lrc ~ 1,
            random = Asym ~ 1,
            start = c(Asym = 103, R0 = -8.5, lrc = -3.3))
fm2 <- update(fm1, random = pdDiag(Asym + lrc ~ 1))
summary(fm1)
summary(fm2)