grid_search_fit_2stage: Two-Stage Grid Search for NLS Fitting

In dryingkineticmodels: Drying Kinetic Models Comparison and Analysis

Two-Stage Grid Search for NLS Fitting

Description

Performs a coarse grid search over a parameter grid and returns the best-fitting nonlinear least squares model using nlsLM.

Usage

grid_search_fit_2stage(
  formula,
  data,
  param_grid,
  control = minpack.lm::nls.lm.control(maxiter = 200)
)

Arguments

formula	A nonlinear model formula.
data	A data frame containing the variables in formula.
param_grid	A named list of numeric vectors defining the grid of starting values for each parameter.
control	Control parameters passed to nls.lm.control.

Value

The best-fitting nls object, or NULL if all starting value combinations failed to converge.

dryingkineticmodels documentation built on July 21, 2026, 5:09 p.m.