classes of data (with a variable size)

Have you looked at "sample" and the various ways of subscripting 
in, e.g., "An Introduction to R" [the upper left option after 
help.start() in R 2.0.1]? 

      Beyond that, I'm very sorry, but I can't understand what you are 
asking.  If this does NOT answer your question, please read the posting 
guide (http://www.R-project.org/posting-guide.html).  Only last week, we 
had several comments from people saying they had solved their own 
problem in the process of preparing a very simple example of what they 
were trying to do, as suggested in the posting guide.  Even if that 
process does not answer your question, I believe it will increase the 
chances you will get a useful reply from your nest post to this list. 

      hope this helps. 
      spencer

How is it possible to "split" a data.frame in order to get classes with
variable size.
actually I'd like to get classes of data with classe size (cs) so that
cs becomes bigger with an other increasing value.

Guillaume Storchi

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