R help - May 2004 - A question about default output on the screen

Hello everyone,


I got a problem to change the default output on the screen and I use 
Xemacs ESS and R.

When I happen to show a data.frame with thousands of records (type a 
variable name and return), the screen just freeze or keep scrolling for 
minutes, because of the large quantity of records.

Therefore I decide to write a more clever "show" method, which will 
check the number of items to print on the screen. If there are too many 
records, it will just prompt a warning message and return. How can I do 
it? I tried it setMethod("show","ANY", 
function(object){....;standerdGenetic("show");}), but it did not work.

Can anyone give me some ideas?

Thanks in advance




Baiyi Song
LS fr. Datenverarbeitungssysteme | Tel. +49 231-755-7009
Universit??t Dortmund            
44221 Dortmund / Germany

But R does not call show() to print, it calls print() unless you have an
object with a formal class.  You can try setting a new data.frame method
for print, but an S3 method, please.

On Fri, 14 May 2004, Song Baiyi wrote:
> I got a problem to change the default output on the screen and I use 
> Xemacs ESS and R.
> 
> When I happen to show a data.frame with thousands of records (type a 
> variable name and return), the screen just freeze or keep scrolling for 
> minutes, because of the large quantity of records.
> 
> Therefore I decide to write a more clever "show" method, which
will
> check the number of items to print on the screen. If there are too many 
> records, it will just prompt a warning message and return. How can I do 
> it? I tried it setMethod("show","ANY", 
> function(object){....;standerdGenetic("show");}), but it did not
work.
> 
> Can anyone give me some ideas?
-- 
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