[R] using tcltk in R under ESS/XEmacs on Windows

[Shawn Boles]

Tony:

It is indeed most amazing that you have been able to get ESS/Emacs
running under Windows.  And much appreciated by those of us who have to
moil around 
with MessySoft machines.

Thanks to all who have contributed to the effort.

Cheers,

Shawn Boles




-----Original Message-----
From: A.J. Rossini [mailto:blindglobe at gmail.com] 
Sent: Saturday, September 25, 2004 8:04 PM
To: Liaw, Andy
Cc: R-Help; MSchwartz at MedAnalytics.com; ESS (Help list)
Subject: Re: [R] using tcltk in R under ESS/XEmacs on Windows

It most likely is Windows specific.  It's most amazing that we
actually have ESS/(X)Emacs working under windows in the first place.

Unfortunately, I'm in transit for the next few weeks, but I'll
probably have a windows machine on my desk sometime after that.  Argh.

best,
-tony


On Fri, 24 Sep 2004 17:48:18 -0400, Liaw, Andy <andy_liaw at merck.com>
wrote:
> > From: Marc Schwartz
> >
> > On Fri, 2004-09-24 at 15:02, Liaw, Andy wrote:
> > > Sorry for the cross-post.  Not sure where the problem is...
> > >
> > > A while back I posted an R function to R-help:
> > >
> > > 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))
> > >     }
> > >
> > > where the default value for the `dir' argument is to run
> > the tcltk directory
> > > chooser and get the directory name chosen.  (Thanks to
> > Prof. John Fox for
> > > the tcltk part!!)  While this function works fine under
> > Rgui on Windows, it
> > > doesn't work when running R within ESS (5.2.3) and XEmacs
> > (21.4.13).  The
> > > directory chooser never shows up, and dir just gets the
> > empty string.  Does
> > > anyone have any idea what could be the problem?  I'd very
> > much appreciate
> > > any pointers.
> > >
> > > Best,
> > > Andy
> >
> > Andy,
> >
> > This works under FC2 using ESS 5.2.3 with XEmacs version 21.4.15, so
> > presumably there is something specific to the Windows
implementation?
> 
> Given Prof. Fox's follow-up and your obvservation, I guess the problem
_is_
> Windows-specific. 8-(
> 
> > Also, two things:
> >
> > 1. You are missing a closing brace above, which I presume may be a
> > simple copy and paste issue.
> 
> Yes.  My apologies.
> 
> > 2. If you successfully change the directory, the cd()
> > function itself is
> > deleted from the global environment via your rm(...), as you
currently
> > have it implemented. I am not sure if this is intentional or not.
> 
> Well, sort of.  I've placed it in a small package along with other
handy
> stuff, so that won't be a problem.
> 
> Best,
> Andy
> 
> 
> 
> > HTH,
> >
> > Marc
> >
> >
> >
> >
> 
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-- 
A.J. Rossini
blindglobe at gmail.com

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