Re: [R] Suppressing output (e.g. from cat)

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Tue, 24 Jun 2008 12:15:18 +0100 (BST)

On Tue, 24 Jun 2008, Richard Pearson wrote:

> Wacek, many thanks! I'm wondering however whether this will be problematic on
> Windows (I have no windows box to hand to check this, but am creating a
> package that I would like to be cross-platform)?

It will fail. But

sink(tempfile())
...
sink()

is portable (and sink("nul:") works on Windows only).

> Richard.
>
> Wacek Kusnierczyk wrote:
>> Richard Pearson wrote:
>>> Is it possible to temporarily suspend output? I am using a function
>>> that gives lots of output using cat, that is not very informative. Is
>>> it possible to turn output off, run the function, then turn output
>>> back on again? I've looked at ?options and done various RSiteSearch()s
>>> but couldn't find a way to do this.
>>>
>>
>> sink("/dev/null")
>>
>> ?sink
>>
>> vQ
>
> --
> Richard D. Pearson richard.pearson_at_postgrad.manchester.ac.uk
> School of Computer Science, http://www.cs.man.ac.uk/~pearsonr
> University of Manchester, Tel: +44 161 275 6178
> Oxford Road, Mob: +44 7971 221181
> Manchester M13 9PL, UK. Fax: +44 161 275 6204

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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