Loren, the easiest solution to your problem is to save objects in
individual files, like
save(BigComputation, file = "BigComputation.rda")
that way you just have one object in each file and can use the file
time stamp.
Using attributes are of course another approach.
Kasper
On Oct 30, 2008, at 9:57 , Loren Engrav wrote:
Thank you
That is too bad as date time of work is important
But, going forward, maybe I can learn how to set the date time in the
objects attributes when it is important
Like I found a discussion on this topic from 2004 which suggests
attr(obj, "timestamp") <- Sys.time()
And then
attr(obj, "timestamp")
So I tried
attr(obj, "datetime") <- date()
Then
attr(obj,"datetime")
And it works so I can do that
But then as I read the ref manual,
file.info tries to show mtime, ctime and atime
But I guess that does not apply to objects within a workspace
From: Simon Urbanek <[EMAIL PROTECTED]>
Date: Wed, 29 Oct 2008 12:08:53 -0400
To: Loren Engrav <[EMAIL PROTECTED]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [R-SIG-Mac] File creation date
On Oct 28, 2008, at 19:03 , Loren Engrav wrote:
Sorry my email was unclear
I am looking at files within a saved R workspace
The date of the workspace file is 3/18/2007 but I don't think all of
the
files were created on that date as I think I used the workspace over
some
period of time
So I would like the creation date of the files WITHIN the workspace
There is no file *within* the workspace. The workspace *is* one file
of serialized R objects and they themselves don't have any timestamp
associated with them. So all you can find out is when you last saved
(or accessed) the workspace, that's all.
Cheers,
S
From: Steve Lianoglou <[EMAIL PROTECTED]>
Date: Tue, 28 Oct 2008 18:48:34 -0400
To: Loren Engrav <[EMAIL PROTECTED]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [R-SIG-Mac] File creation date
Hi,
On Oct 28, 2008, at 6:00 PM, Loren Engrav wrote:
Ok, I give up
I am exploring some workspace files created long long ago
And need the creation date of some of the files
I try ls() but cannot see the parameters to show creation date
I try file.info and get NA
How do I get creation date to show
One way is to navigate to the file via the Finder, select it, and
hit
Cmd-I (File > Get Info)
You'll find what you're looking for in the "General" section.
HTH,
-steve
--
Steve Lianoglou
Graduate Student: Physiology, Biophysics and Systems Biology
Weill Medical College of Cornell University
http://cbio.mskcc.org/~lianos
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