[R] Clearing Console; of weeks of codes!

[Philipp Pagel]

Please reply to the list, so the OP and otheres following the thread
can see your contributions. I'm taking this back to r-help.

On Thu, Apr 14, 2011 at 01:43:31AM -0700, Mohammad Tanvir Ahamed wrote:
> you can try it ...
> 
> rm(list=ls())

No - this has been suggested before and saying it gain does not make
it less wrong: rm() will delete objects from the workspace but has
absolutely no effect on the history.

cu
	Philipp


> /.......Tanvir Ahamed
> 
> 
>     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
>     From: Philipp Pagel <p.pagel at wzw.tum.de>
>     To: r-help at r-project.org
>     Sent: Thursday, April 14, 2011 10:23 AM
>     Subject: Re: [R] Clearing Console; of weeks of codes!
> 
>     > I do see I have weeks of codes in my console when I check with my arrow
>     up
>     > keys.  I have been clearing them with Control L but it seems to clear it
>     > clear the screen temporally.
> 
>     CTRL-L simply clears the screen and not the history.
> 
>     > I do see the previous codes again when I open R
>     > the next day, after quitting the session!
>     >
>     > Q:
>     > How do I clear this?
> 
>     What you are seeing is the R history which is stored in the file
>     .Rhistory in the current working directory when the session is closed
>     or savehistory() is used. Deleting that file before starting R will
>     "clear" the history. I am not sure you can clear the history of a
>     running R session. Deleting the file will not work while the session
>     is open because the history is in memory at that time and I am not
>     aware of a command to manipulate the current history.
> 
>     The environment variable R_HISTSIZE can be used to control the size
>     of the history.
> 
>     see ?history for details.
> 
>     cu
>         Philipp
> 
>     --
>     Dr. Philipp Pagel
>     Lehrstuhl f r Genomorientierte Bioinformatik
>     Technische Universit t M nchen
>     Wissenschaftszentrum Weihenstephan
>     Maximus-von-Imhof-Forum 3
>     85354 Freising, Germany
>     http://webclu.bio.wzw.tum.de/~pagel/
> 
>     ______________________________________________
>     R-help at r-project.org mailing list
>     https://stat.ethz.ch/mailman/listinfo/r-help
>     PLEASE do read the posting guide http://www.R-project.org/
>     posting-guide.html
>     and provide commented, minimal, self-contained, reproducible code.
> 
> 
> 

-- 
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
Maximus-von-Imhof-Forum 3
85354 Freising, Germany
http://webclu.bio.wzw.tum.de/~pagel/