fit_nl: Fit a model to data using functions from nloptr

In kylebtwin/optimhelp: Helper functions for optimizing in R

Description

Fit a model to data using functions from nloptr

Usage

fit_nl(theta, data, mod, optimizer = c("newuoa", "neldermead"),
  pred_name = "CP", ofv = els, logdv = FALSE, sigma = ~sigma,
  pred_initial = FALSE, cov_step = FALSE, ...)

Arguments

theta	a parset object
data	a data set in data.frame format
mod	a mrgsolve model object
optimizer	used to search the parameter space
pred_name	name in simulated output representing 'PRED'
ofv	objective function function
logdv	logical; if 'TRUE', then the dependent variable is log-transformed during 'ofv' calculation
sigma	a one-sided formula containing an expression for the residual error variance
pred_initial	if 'TRUE', a column is added to the output called 'INITIAL' which is a model prediction at the initial parameter estimates
cov_step	if 'TRUE', then standard errors are derived using the Hessian
...	passed to 'ofv'

kylebtwin/optimhelp documentation built on Sept. 12, 2021, 8:10 p.m.