seinfitR_control: SeinfitR Control

In seinfitR: Modeling the Relationship Between Nematode Densities and Plant Growth

SeinfitR Control

Description

Custom Control Function for the SeinfitR Model Fitting

Usage

seinfitR_control(
  ftol = sqrt(.Machine$double.eps),
  ptol = sqrt(.Machine$double.eps),
  gtol = 0,
  diag = list(),
  epsfcn = 0,
  factor = 100,
  maxfev = integer(),
  maxiter = 50,
  nprint = 0,
  trace = FALSE
)

Arguments

ftol	Termination condition for relative reduction in the sum of squares.
ptol	Termination based on relative error between two consecutive iterations.
gtol	Controls the orthogonality between the function vector and the Jacobian.
diag	Multiplicative scale factors for the parameters.
epsfcn	Step size for forward-difference approximation of the Jacobian.
factor	Initial step bound factor.
maxfev	Maximum number of function evaluations.
maxiter	Maximum number of iterations.
nprint	Controls printing of iteration details.
trace	A logical value indicating if a trace of the iteration progress should be printed.

Details

This function returns a list of control parameters for the Levenberg-Marquardt algorithm used by the nlsLM function from the minpack.lm package. These parameters are specifically designed to control the fitting process in the seinfitR function.

Value

A list of control parameters to be used in the nlsLM function during the fitting of the Seinhorst model using seinfitR.

seinfitR documentation built on April 11, 2025, 5:54 p.m.