R help - Jan 2004 - Directory-like data organisation w/ environments?

Dear r-users!

I wonder if there is a way of designing a directory like structure for
holding my data using environments?

It would be nice if I could implement a kind of 'cd' command to change
to a differend environment etc.

Can anybody give me a hint?

-cl

-- 
Christoph Lange
MPI fuer biologische Kybernetik  |Phone: +49-7071-601-607|
Postfach 2169, D-72012 Tuebingen |FAX:   +49-7071-601-616|

Would attaching a nested list be close to what you want?  E.g.,
> x <- list(y1 = list(z = matrix(1:4, 2, 2)), y2=matrix(0, 3, 2))
> attach(x)
> y2
     [,1] [,2]
[1,]    0    0
[2,]    0    0
[3,]    0    0
> attach(y1)
> z
     [,1] [,2]
[1,]    1    3
[2,]    2    4

You should be aware that the global environment is #1 on the search list,
and you can't attach anything else at position 1.  So if you have something
in the workspace that has the same name as in what you attach()'ed, the one
in the workspace is seen.

HTH,
Andy

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Christoph Lange
> Sent: Tuesday, January 27, 2004 5:43 AM
> To: R Help List
> Subject: [R] Directory-like data organisation w/ environments?
> 
> 
> 
> Dear r-users!
> 
> I wonder if there is a way of designing a directory like structure for
> holding my data using environments?
> 
> It would be nice if I could implement a kind of 'cd' command to
change
> to a differend environment etc.
> 
> Can anybody give me a hint?
> 
> -cl
> 
> -- 
> Christoph Lange
> MPI fuer biologische Kybernetik  |Phone: +49-7071-601-607|
> Postfach 2169, D-72012 Tuebingen |FAX:   +49-7071-601-616|
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
> 
> 

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Dear Christoph,

Take a look at the cd function (and others) in the mvbutils package.

I hope that this helps,
  John

At 11:42 AM 1/27/2004 +0100, Christoph Lange wrote:
>Dear r-users!
>
>I wonder if there is a way of designing a directory like structure for
>holding my data using environments?
>
>It would be nice if I could implement a kind of 'cd' command to
change
>to a differend environment etc.
>
>Can anybody give me a hint?
>
>-cl
____________________________
John Fox
Department of Sociology
McMaster University
email: jfox at mcmaster.ca
web: http://www.socsci.mcmaster.ca/jfox

> -----Original Message-----
> 
> Dear r-users!
> 
> I wonder if there is a way of designing a directory like 
> structure for holding my data using environments?
> 
> It would be nice if I could implement a kind of 'cd' command 
> to change to a differend environment etc.
> 
> Can anybody give me a hint?
> 
> -cl
Hi Christophe

You might want to check out the 'mvbutils' package on CRAN, and
specifically those sections relating to the 'cd' command. This allows
you to create & maintain a hierarchical project structure (like a directory
tree). You can switch between workspaces within a single R session, search thru
the hierarchy, move stuff around, etc.

[A colleague passed on your email to me-- he may already have sent you this info
directly.]

Hope this helps

Mark

*******************************

Mark Bravington
CSIRO (CMIS)
PO Box 1538
Castray Esplanade
Hobart
TAS 7001

phone (61) 3 6232 5118
fax (61) 3 6232 5012
Mark.Bravington at csiro.au