Re: [Rd] On RObjectTables

From: Michael Lawrence <>
Date: Mon, 23 Jul 2012 17:06:28 -0700


Please keep me advised on this, because the Qt interfaces heavily rely on the ObjectTables (btw, it has worked great for my use cases).


On Fri, Jul 20, 2012 at 7:32 AM, <> wrote:

> 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]]
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> --
> 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:
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