Re: [R] dataset.date, date of an object

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From: Prof Brian Ripley (ripley@stats.ox.ac.uk)
Date: Wed 05 May 2004 - 22:12:09 EST


Message-id: <Pine.LNX.4.44.0405051311240.8964-100000@gannet.stats>

Let me repeat

> R does not store objects `permanently' as S-PLUS (sic) does, so your exact
> phrasing is meaningless.

In S-PLUS my.dataframe is an object in a .Data directory. There is no
such concept in R.

On Wed, 5 May 2004, Jason Watts wrote:

> Ok, I'd like the date an object was saved. Here's what I used to do in S-PLUS:
>
> > dataset.date('my.dataframe')
> [1] "Tue May 4 10:16:00 2004"
>
>
> Prof Brian Ripley <ripley@stats.ox.ac.uk> wrote:
> What do you mean by `a permanently stored version of a dataset'?
> If you mean a save()d version, use file.info() on the saved file.
>
> R does not store objects `permanently' as S-PLUS (sic) does, so your exact
> phrasing is meaningless.
>
> On Tue, 4 May 2004, Jason Watts wrote:
>
> > I'm looking for a function that returns the time at which a permanently
> > stored version of a dataset (object) was last modified, just like
> > dataset.date in S-Plus. Any suggestions?
>
>

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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