Re: [R] More on global environment

2004-07-17 Thread Cliff Lunneborg 
You may want to look at the notes on and functions for workspace
management that guide me. They can be downloaded from

http://faculty.washington.edu/lunnebor/Stat342/

by checking on Exercises. I use the .GlobalEnv (position 1 on search
path) solely for scratch and have project work attached further down the
path. The two functions move() and rm.sv() contributed by my colleague
John Miyamoto and described in the above make this easy to do.

Michael Prager wrote:

: Date: Thu, 15 Jul 2004 14:45:41 -0400
: From: Mike Prager [EMAIL PROTECTED]
: Subject: [R] More on global environment
: To: R Help list [EMAIL PROTECTED]
: Message-ID: [EMAIL PROTECTED]
: Content-Type: text/plain; charset=us-ascii; format=flowed
:
: To follow up on my previous question, suppose a user R session wants
to
: unload one workspace and load another within an R session.  Is the
: following the correct sequence?
:
(snip)
: Michael Prager, Ph.D.
: NOAA Center for Coastal Fisheries and Habitat Research
: Beaufort, North Carolina  28516
: http://shrimp.ccfhrb.noaa.gov/~mprager/


**
Cliff Lunneborg, Professor Emeritus, Statistics 
Psychology, University of Washington, Seattle
[EMAIL PROTECTED]

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Re: [R] More on global environment

2004-07-16 Thread Uwe Ligges 
Mike Prager wrote:
At 7/15/2004 03:23 PM Thursday, Andy Liaw wrote:
I've posted the following to R-help before.  Hope it helps you.
cd - function(dir = tclvalue(tkchooseDirectory()), saveOld=FALSE,
   loadNew=TRUE) {
stopifnot(require(tcltk))

flush.console()

What you want in a general function is
  if(.Platform$OS.type == windows)
  flush.console()
Since flush.console() does not exist in any other version than the 
Windows versions of R.

Uwe Ligges

if (saveOld) save.image(compress=TRUE)
setwd(dir)
rm(list=ls(all=TRUE, envir=.GlobalEnv), envir=.GlobalEnv)
if (loadNew  file.exists(.RData)) {
loaded - load(.RData, envir=.GlobalEnv)
return(invisible(loaded))
}
}
[The tcltk part is based on Prof. Fox's help.]
Andy

Thanks!  It's lovely.  I added the call to flush.console() as shown, 
which (under Windows RGUI at least) issues the message that tcl is 
loading in a more timely way.

Mike
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Re: [R] More on global environment

2004-07-15 Thread Roger D. Peng 
That seems reasonable, although you might use
rm(list = ls(all.names = TRUE))
if you are interested in removing objects whose names begin with a period.
-roger
Mike Prager wrote:
To follow up on my previous question, suppose a user R session wants to 
unload one workspace and load another within an R session.  Is the 
following the correct sequence?

1.  save.image() to save the current workspace as .Rdata in the current 
working directory.
2.  rm(list=ls()) to remove everything from the workspace.
3.  setcwd(xxx) to set the new working directory.
4.  load(.Rdata) to load the new workspace.


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RE: [R] More on global environment

2004-07-15 Thread Liaw, Andy 
I've posted the following to R-help before.  Hope it helps you.

cd - function(dir = tclvalue(tkchooseDirectory()), saveOld=FALSE,
   loadNew=TRUE) {
stopifnot(require(tcltk))
if (saveOld) save.image(compress=TRUE)
setwd(dir)
rm(list=ls(all=TRUE, envir=.GlobalEnv), envir=.GlobalEnv)
if (loadNew  file.exists(.RData)) {
loaded - load(.RData, envir=.GlobalEnv)
return(invisible(loaded))
}
}

[The tcltk part is based on Prof. Fox's help.]

Andy

 From: Mike Prager
 
 To follow up on my previous question, suppose a user R 
 session wants to 
 unload one workspace and load another within an R session.  Is the 
 following the correct sequence?
 
 1.  save.image() to save the current workspace as .Rdata in 
 the current 
 working directory.
 2.  rm(list=ls()) to remove everything from the workspace.
 3.  setcwd(xxx) to set the new working directory.
 4.  load(.Rdata) to load the new workspace.
 
 
 -- 
 Michael Prager, Ph.D.
 NOAA Center for Coastal Fisheries and Habitat Research
 Beaufort, North Carolina  28516
 http://shrimp.ccfhrb.noaa.gov/~mprager/
 
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RE: [R] More on global environment

2004-07-15 Thread Mike Prager 
At 7/15/2004 03:23 PM Thursday, Andy Liaw wrote:
I've posted the following to R-help before.  Hope it helps you.
cd - function(dir = tclvalue(tkchooseDirectory()), saveOld=FALSE,
   loadNew=TRUE) {
stopifnot(require(tcltk))
flush.console()
if (saveOld) save.image(compress=TRUE)
setwd(dir)
rm(list=ls(all=TRUE, envir=.GlobalEnv), envir=.GlobalEnv)
if (loadNew  file.exists(.RData)) {
loaded - load(.RData, envir=.GlobalEnv)
return(invisible(loaded))
}
}
[The tcltk part is based on Prof. Fox's help.]
Andy
Thanks!  It's lovely.  I added the call to flush.console() as shown, which 
(under Windows RGUI at least) issues the message that tcl is loading in a 
more timely way.

Mike
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