From luke-tierney at uiowa.edu  Fri Jul 20 16:32:21 2012
From: luke-tierney at uiowa.edu (luke-tierney at uiowa.edu)
Date: Fri, 20 Jul 2012 09:32:21 -0500
Subject: [Rd] On RObjectTables
In-Reply-To: <CABFfbXv480ciNg3vphvwwvZvX03vvWABGRRT8a7SgRn25wPXgg@mail.gmail.com>
References: <CABFfbXv480ciNg3vphvwwvZvX03vvWABGRRT8a7SgRn25wPXgg@mail.gmail.com>
Message-ID: <alpine.LFD.2.02.1207200928200.1918@nokomis.stat.uiowa.edu>

I believe everyone who has worked on the relevant files has tried to
maintain this functionality, but as it seems to get used and tested
very little I can't be sure it is functional at this point. The
facility in its current form does complicate the internal code and
limit some experiments we might otherwise do, so I would not be
surprised if it was at least substantially changed in the next year or
two.

Best,

luke

On Thu, 19 Jul 2012, Jeroen Ooms wrote:

> I was wondering if anyone knows more about the state of RObjectTables. This
> largely undocumented functionality was introduced by Duncan around 2002
> somewhere and enables you create an environment where the contents are
> dynamically queried by R through a hook function. It is mentioned in R
> Internals and ?attach. This functionality is quite powerful and allows you
> to e.g. offload a big database of R objects to disk, yet use them as if
> they were in your workspace. The recent RProtoBuf package also uses some of
> this functionality to dynamically lookup proto definitions.
>
> I would like to do something similar, but I am not sure if support for this
> functionality will be or has been discontinued. The RObjectTables package
> is no longer available on OmegaHat and nothing has not been mentioned on
> the mailing lists for about 5 years. I found an old version of the package
> no github which seems to work, but as far as I understand, the package
> still needs the hooks from within R to work. So if this functionality is
> actually unsupported and might be removed at some point, I should probably
> not invest in it.
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

-- 
Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:   luke-tierney at uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu



[Rd] On RObjectTables
luke-tierney at uiowa.edu