nlmixr2fix: Try to fix a nlmixr2 fit

In nlmixr2est: Nonlinear Mixed Effects Models in Population PK/PD, Estimation Routines

Try to fix a nlmixr2 fit

Description

Currently this re-evaluates the function in the current version of rxode2.

Usage

nlmixr2fix(fit)

Arguments

fit	nlmixr2 fit object from a different version of nlmixr2.

Value

A nlmixr2 fit that has been (possibly) adjusted to work with the current version of nlmixr2.

Author(s)

Matthew L. Fidler

Examples

# This is a nlmixr2 v3 fit
fit <- system.file("testfit_nlmixr3.rds", package = "nlmixr2est")
fit <- readRDS(fit)

# While it prints well, it can't be used in all functions because
# Language features (like +var()) are not supported in the v3 version

print(fit)

try(rxSolve(fit)) # should error, but with try it will just display the error

# This function attempts to fix it by regenerating the rxode2 model with the
# new features

# This function also prints out the information on how this fit was created

fit <- nlmixr2fix(fit)

# Now solving and other functions work

rxSolve(fit)

nlmixr2est documentation built on Aug. 8, 2025, 6:09 p.m.