[R] evaluating keystroke

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Jul 24 17:36:00 CEST 2001

On Tue, 24 Jul 2001, Sven Garbade wrote:

> Hi all,
> is it possible that a R function wait for a keystroke (as the demo()
> function do) and evaluate the pressed key?

Not really.  In general you need to hit Return to get any input
into R, and the readline() function is one way to do this.  The
platform-specific input routines wait for a complete line (indicated by
hitting Return) before passing the line onto R.

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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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