[R] evaluating keystroke

David White dwhite at ling.ohio-state.edu
Tue Jul 24 23:12:11 CEST 2001

On the question of evaluating keystrokes:

I often plot subsets of data to get a sense of what I'm looking for. I
generally run a for loop with the specification par(ask=TRUE) after each
plot command, so that I can take time to look over the data before going
on to the next plot by pressing RETURN.B

Would it be possible to use readline() in such a command sequence to write
a comment about each plot before going on to the next? This would
certainly help me take quicker and better notes when examining data, and
might even allow me to use R in a perception/classification experiment.



S. David White
sdavidwhite at bigfoot.com
Columbus, Ohio

On Tue, 24 Jul 2001, Mark Myatt wrote:

%Sven Garbade <garbade at psy.uni-muenchen.de> writes:
%>Hi all,
%>is it possible that a R function wait for a keystroke (as the demo()
%>function do) and evaluate the pressed key?
%The only function I know is readline() which will allow up to 32
%characters to be read from the console. Use subst() to query the
%returned string. See help(readline) for details.
%Mark Myatt
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