Re: [R] setting options only inside functions

From: Uwe Ligges <ligges_at_statistik.tu-dortmund.de>
Date: Wed, 27 Apr 2011 15:26:16 +0200

On 27.04.2011 15:16, Jannis wrote:
> Dear list members,
>
>
> is it possible to set some options only inside a function so that the original options are restored once the function is finished or aborted due to an error? Until now I do something like:
>
>
> dummy=function()
> {
> old.options=options(error=dummy1())
>
> ....
>
> options(old.options)
> }
>
>
> This works for most cases but when the function terminates because of an error and its last command is not run, error=dummy1() still remains as an option. Is there any way around this?
>

See ?on.exit:

  dummy <- function()
  {

     old.options <- options(error=dummy1())
     on.exit(options(old.options))


     ....


  }

Uwe Ligges

>
> Cheers
> Jannis
>
>
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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. Received on Wed 27 Apr 2011 - 13:34:45 GMT

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