Re: [R] Clearing Console; of weeks of codes!

From: Philipp Pagel <p.pagel_at_wzw.tum.de>
Date: Thu, 14 Apr 2011 11:21:38 +0200

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/

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Received on Thu 14 Apr 2011 - 10:29:36 GMT

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