R Under development (unstable) (2024-02-22 r85974 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2024 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> 
> require(OneStep)
Loading required package: OneStep
Loading required package: fitdistrplus
Loading required package: MASS
Loading required package: survival
Loading required package: numDeriv
Loading required package: parallel
Loading required package: extraDistr
> 
> n <- 1e3
> 
> #### standard student distribution ####
> 
> theta <- c("df"=3/2, "ncp"=0)
> o.sample <- rt(n, df = theta["df"], ncp = theta["ncp"])
> 
> mledist(o.sample, "t", start=list("df"=2), fix.arg=list("ncp"=0))
$estimate
      df 
1.472308 

$convergence
[1] 0

$value
[1] 2137.142

$hessian
         df
df 150.9719

$optim.function
[1] "optim"

$optim.method
[1] "BFGS"

$fix.arg
$fix.arg$ncp
[1] 0


$fix.arg.fun
NULL

$weights
NULL

$counts
function gradient 
      20        6 

$optim.message
NULL

$loglik
[1] -2137.142

> onestep(o.sample, "t", control=list(delta=0.3))
Parameters:
   estimate
df 1.151587
> onestep(o.sample, "t", control=list(delta=0.75))
Parameters:
   estimate
df 1.472307
> 
> 
> proc.time()
   user  system elapsed 
   1.23    0.14    1.37