optifix: optifix. Optimise with fixed parameters

In szhaolab/diffdriver: Identify differential selection

optifix. Optimise with fixed parameters

Description

its like optim, but with fixed parameters.

Usage

optifix(
  par,
  fixed,
  fn,
  gr = NULL,
  ...,
  method = c("Nelder-Mead", "BFGS", "CG", "L-BFGS-B", "SANN"),
  lower = -Inf,
  upper = Inf,
  control = list(),
  hessian = FALSE
)

Details

specify a second argument 'fixed', a vector of TRUE/FALSE values. If TRUE, the corresponding parameter in fn() is fixed. Otherwise its variable and optimised over.

The return thing is the return thing from optim() but with a couple of extra bits - a vector of all the parameters and a vector copy of the 'fixed' argument.

Written by Barry Rowlingson <[e-mail]> October 2011

This file released under a CC By-SA license: http://creativecommons.org/licenses/by-sa/3.0/

and must retain the text: "Originally written by Barry Rowlingson" in comments.

szhaolab/diffdriver documentation built on June 1, 2025, 8:04 p.m.