R help - Feb 2010 - get current window (device) size

Dear R-listers, 
 
I am writing a function that will generate a simple plot for the user . The size
of the window (that contains the plot) may not be what the user wants.
 
Supposing the user adjusts the window to a size of her/his choice, I would like
to be able to save the new window size and specify the plot to be of this new
window size when the user calls my function again. My question is what is the
kind of 'get' or save graphic parameter command that I need to extract
the size of the current window? I have looked at 'par' and
'getOption' but they don't seem to what I need.
 
BTW, I use R in Windows XP.
 
Many thanks for any advice in advance. 
 
Best wishes,
Edmond 
 
 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Edmond Ng, MSc CStat
Lecturer in Medical Statistics
Health Services Research Unit, London School Hygiene & Tropical Medicine,
Keppel Street, London WC1E 7HT, UK
Tel: +44 (0)20 7927 2366 (direct line: ext 2065)  Fax: +44 (0)20 7580 8183
(Room 35, Ground Floor, Malet Street side)  
Website: http://www.lshtm.ac.uk/hrsu 
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

	[[alternative HTML version deleted]]

On Mon, 15 Feb 2010, Edmond.Ng at lshtm.ac.uk wrote:
> Dear R-listers,
>
> I am writing a function that will generate a simple plot for the 
> user . The size of the window (that contains the plot) may not be 
> what the user wants.
>
> Supposing the user adjusts the window to a size of her/his choice, I 
> would like to be able to save the new window size and specify the 
> plot to be of this new window size when the user calls my function 
> again. My question is what is the kind of 'get' or save graphic 
> parameter command that I need to extract the size of the current 
> window? I have looked at 'par' and 'getOption' but they
don't seem
> to what I need.
>From the help for par:
      ?din? _*R.O.*_; the device dimensions, ?(width,height)?, in
           inches.

seems to be exactly what you are asking for.

(I'd be cautious about saving this across sessions: users may well use 
R on different computers with a common file system.)
> Many thanks for any advice in advance.
>
> Best wishes,
> Edmond
>
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Edmond Ng, MSc CStat
> Lecturer in Medical Statistics
> Health Services Research Unit, London School Hygiene & Tropical
Medicine, Keppel Street, London WC1E 7HT, UK
> Tel: +44 (0)20 7927 2366 (direct line: ext 2065)  Fax: +44 (0)20 7580 8183
> (Room 35, Ground Floor, Malet Street side)
> Website: http://www.lshtm.ac.uk/hrsu
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-- 
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