[Rd] On RObjectTables

Duncan Temple Lang dtemplelang at ucdavis.edu
Fri Jul 20 19:50:03 CEST 2012

Hi Jeroen

 I am restoring the packages on the Omegahat site as people
ask for them.

 I just put the RObjectTables package up in in its current form at
 and am happy to enhance it as needed.

 We can chat off-list, if you want.


On 7/19/12 10:30 AM, 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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