R: Perform Nonlinear Regression Using 'optim' as the Optimization Engine

# Perform Nonlinear Regression Using 'optim' as the Optimization Engine

## Documentation for package ‘OptimModel’ version 2.0-3

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Code demos. Use demo() to run them.

## Help Pages

beta_model | Beta hook-effect model, gradient, starting values, and back-calculation functions
exp_2o_decay | Five-parameter second-order exponential decay, gradient, starting values, and back-calculation functions
exp_decay | Three-parameter exponential decay, gradient, starting values, and back-calculation functions
exp_decay_pl | Three-parameter exponential decay with initial plateau, gradient, starting values, and back-calculation functions
f2djac | Compute derivative with respect to parameters
getData | Extract data object from an optim fit
getData.optim.fit | Extract data object from an optim fit
get_se_func | Compute standard error for a function of model parameter estimates
gompertz_model | Four-parameter Gompertz model, gradient, starting values, and back-calculation functions
hill5_model | Five-parameter Hill model, gradient, starting values, and back-calculation functions
hill_model | Four-parameter Hill model, gradient, starting values, and back-calculation functions
hill_quad_model | Five-parameter Hill model with quadratic component, gradient, starting values, and back-calculation functions
hill_switchpoint_model | Five-parameter Hill model with switch point component, gradient, starting values, and back-calculation functions
linear_model | Linear model, gradient, and starting values
nlogLik_cauchy | Negative log-likelihood function for Cauchy regression
optim_fit | Fit Model with optim
predict.optim_fit | Predicted values for optim.fit objects
print.optim_fit | Prints optim_fit objects
residuals.optim_fit | Residuals for optim.fit objects
robust_fit | Fit Model with optim
rout_fitter | Fit Model with ROUT
rout_outlier_test | ROUT Outlier Testing
test_fit | Test Fit Parameters
weights_huber | Weight functions for optim_fit
weights_tukey_bw | Weight functions for optim_fit
weights_varConstPower | Weight functions for optim_fit
weights_varExp | Weight functions for optim_fit
weights_varIdent | Weight functions for optim_fit
weights_varPower | Weight functions for optim_fit