[R] optimized value worse than starting Value

[Ravi Varadhan]

Yes, Barry, we are aware of this issue.  It is caused by printing to console from FORTRAN in one of the optimization codes, ucminf.  If we set trace=FALSE in "optimx", this problem goes away.

Ravi.

____________________________________________________________________

Ravi Varadhan, Ph.D.
Assistant Professor,
Division of Geriatric Medicine and Gerontology
School of Medicine
Johns Hopkins University

Ph. (410) 502-2619
email: rvaradhan at jhmi.edu


----- Original Message -----
From: Barry Rowlingson <b.rowlingson at lancaster.ac.uk>
Date: Thursday, September 9, 2010 4:13 am
Subject: Re: [R] optimized value worse than starting Value
To: Michael Bernsteiner <dethlef1 at hotmail.com>
Cc: rvaradhan at jhmi.edu, r-help at r-project.org


> On Wed, Sep 8, 2010 at 6:26 PM, Michael Bernsteiner
> <dethlef1 at hotmail.com> wrote:
> > @Barry: Yes it is the Rosenbrock Function. I'm trying out some thing 
> I found
> > here: 
> >
> > @Ravi: Thanks for your help. I will have a closer look at the BB 
> package. Am
> > I right, that the optimx package is ofline atm? (Windows)
> 
>  It looks like the Windows build of optimx failed the R CMD check when
> running the examples:
> 
> 
> 
> Barry