[R] Rconsole wishlist

Duncan Mackay Duncan.Mackay at flinders.edu.au
Fri Mar 4 05:00:20 CET 2005

Sorry, yes, Rgui under WinXP (SP2). But while Windows date stamps the
history file

> file.info(".Rhistory")
          size isdir mode               mtime               ctime
.Rhistory 5377 FALSE  666 2005-03-04 10:37:52 2005-03-04 10:37:52
.Rhistory 2005-03-04 13:54:11

the problem is that there can be multiple sessions stored in .Rhistory and
the session dates aren't stored there. Moreover, it seems to me that the
history buffer can also overflow without warning after long sessions or many
repeated sessions and so that you can inadvertently lose parts of your
command log. (Is this right, anyone?) Perhaps it would be preferable for R
to save each session's command history in a separate history file, along the
lines of 

.Last <- function() {
savefilename <- paste("Rhistory",date())
savefilename <- gsub(" ","_",savefilename)
savefilename <- gsub(":",".",savefilename)
savefilename <- paste(savefilename,".txt",sep="")
if(interactive())  try(savehistory(savefilename))
cat("Current history saved in file: ",savefilename,"\n")

but this doesn't address any overflow issues.


-----Original Message-----
From: Liaw, Andy [mailto:andy_liaw at merck.com] 
Sent: Friday, 4 March 2005 11:14 AM
To: 'Duncan Mackay'; R-news
Subject: RE: [R] Rconsole wishlist

I'm guessing you're talking about Rgui on Windows, but please don't leave us

If you run R under Ess/(X)Emacs, you have the entire session that can be
saved in a (transcript) file.

Does your OS not put date stamps on file?

> file.info(".Rhistory")
          size isdir mode               mtime               ctime
.Rhistory 1025 FALSE  666 2005-03-03 19:27:31 2004-08-13 10:45:09
.Rhistory 2005-03-03 19:27:31


> From: Duncan Mackay
> Hi all,
> Wouldn't it be nice (??!!) if R automatically issued a
> warning message when
> the R console buffer was about to fill so that you could save all your
> output into a text file? (I know about sink(), but I think it 
> would be good
> to have an easier mechanism to save a complete record of messages and
> function output). And on a similar vein, wouldn't it also be nice if R
> automatically entered a date stamp into the history file??
> Duncan
> *****************************************
> Dr. Duncan Mackay
> School of Biological Sciences
> Flinders University
> GPO Box 2100
> Adelaide
> S.A.    5001
> Ph (08) 8201 2627    FAX (08) 8201 3015

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