broom (version 0.4.3)

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

# NOT RUN {
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)

# }