[R] how i can get input from "user input"
Brian D Ripley
ripley at stats.ox.ac.uk
Thu Mar 31 11:47:46 CEST 2005
On Thu, 31 Mar 2005, Martin Maechler wrote:
> >>>>> "BertG" == Berton Gunter <gunter.berton at gene.com>
> >>>>> on Wed, 30 Mar 2005 10:09:38 -0800 writes:
>
> BertG> If you are on Windows and want to go GUI, see
> BertG> ?choose.files, ?winMenuAdd, ?winDialog, ?select.list
>
> with the big drawback that it will only work on Windows.
I don't think that a `big' drawback if you `want to go GUI', as GUI
conventions are so different between platforms (and tcltk being different
from the `native' one on each platform). But we are beginning to attempt
to add platform-independent wrappers to GUI widgets.
> As Uwe says below, it depends on your context;
> for relative simple things, however please consider a portable
> solution, using
> menu(), readline(), ..
>
> BTW, menu() has been improved in R 2.1.0 (alpha --> please test!),
> and is now connected with select.list() which should work on all
> platforms (and uses tcltk on Linux when available).
To be a bit more specific,
menu() has a 'graphics' argument that uses a listbox on Windows, MacOS or
tcltk (where available).
select.list() works on all platforms, graphically as for
menu(graphics=TRUE), otherwise in text mode.
I intend to add a tcltk-based version of choose.files(). (One of the
problems with tcltk is that its widgets are OS-specific, and getting
select.list to choose a reasonable height tooks ages: there needs to a
fudge factor of 3 pixels/line on Unix and 1 pixel/line on Windows.)
--
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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