broom (version 0.3.7)

optim_tidiers: Tidiers for lists returned from optim

Description

Tidies objects returned by the optim function for general-purpose minimization and maximization.

Usage

tidy_optim(x, ...)
glance_optim(x, ...)

Arguments

x

list returned from optim

...

extra arguments

Value

• All tidying methods return a data.frame without rownames, whose structure depends on the method chosen.

  tidy returns a data frame with one row per parameter that was estimated, with columns

• parameter
  name of the parameter, or parameter1, parameter2... if the input vector is not named
• value
  parameter value that minimizes or maximizes the output
• glance returns a one-row data frame with the columns
• value
  minimized or maximized output value
• function.count
  number of calls to fn
• gradient.count
  number of calls to gr
• convergence
  convergence code representing the error state

See Also

optim

Examples

func <- function(x) {
    (x[1] - 2)^2 + (x[2] - 3)^2 + (x[3] - 8)^2
}

o <- optim(c(1, 1, 1), func)

tidy(o)
glance(o)