R devel - Nov 2004 - Code/doc inconsistancy in constrOptim (PR#7346)

Code in constrOptim() (R-2.0.0, package stats):

     if (any(ui %*% theta - ci <= 0))
         stop("initial value not feasible")

but the help page tells us in Section "Details":

"The feasible region is defined by ui %*% theta - ci >= 0."


Uwe Ligges





--please do not edit the information below--

Version:
  platform = i386-pc-mingw32
  arch = i386
  os = mingw32
  system = i386, mingw32
  status   major = 2
  minor = 0.0
  year = 2004
  month = 10
  day = 04
  language = R

Windows NT 4.0 (build 1381) Service Pack 6

Search Path:
  .GlobalEnv, package:methods, package:stats, package:graphics, 
package:grDevices, package:datasets, package:utils, package:fortunes, 
Autoloads, package:base

ligges@statistik.uni-dortmund.de wrote:
> Code in constrOptim() (R-2.0.0, package stats):
> 
>      if (any(ui %*% theta - ci <= 0))
>          stop("initial value not feasible")
> 
> but the help page tells us in Section "Details":
> 
> "The feasible region is defined by ui %*% theta - ci >= 0."
Damn, I'm sorry, apologies!!!

Someone told me of an error and I did not check carefully enough, in 
particluar not the following help pages sentence "The starting value 
must be in the interior of the feasible region, but the minimum may be 
on the boundary."

Uwe Ligges




> 
> Uwe Ligges
> 
> 
> 
> 
> 
> --please do not edit the information below--
> 
> Version:
>   platform = i386-pc-mingw32
>   arch = i386
>   os = mingw32
>   system = i386, mingw32
>   status >   major = 2
>   minor = 0.0
>   year = 2004
>   month = 10
>   day = 04
>   language = R
> 
> Windows NT 4.0 (build 1381) Service Pack 6
> 
> Search Path:
>   .GlobalEnv, package:methods, package:stats, package:graphics, 
> package:grDevices, package:datasets, package:utils, package:fortunes, 
> Autoloads, package:base
> 
> ______________________________________________
> R-devel@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel