R help - Jul 2009 - Sampling of non-overlapping intervals of variable length

Hi,

I hope I am not repeating a question which has been posed already.
I am trying to do the following in the most efficient way:
I would like to sample from a finite (large) set of integers n non-overlapping
intervals, where each interval i has a different, set length L_i
(which is the number
of integers in the interval).
I had the idea to sample recursively on a vector with the already
chosen intervals
discarded but that seems to be too complicated.
Any suggestions on that?

Thanks a lot.

Hadassa


-- 
Hadassa Brunschwig
PhD Student
Department of Statistics
The Hebrew University of Jerusalem
http://www.stat.huji.ac.il

On Jul 19, 2009, at 1:05 PM, Hadassa Brunschwig wrote:
> Hi,
>
> I hope I am not repeating a question which has been posed already.
> I am trying to do the following in the most efficient way:
> I would like to sample from a finite (large) set of integers n non- 
> overlapping
> intervals, where each interval i has a different, set length L_i
> (which is the number
> of integers in the interval).
> I had the idea to sample recursively on a vector with the already
> chosen intervals
> discarded but that seems to be too complicated.
It might be ridiculously easy if you sampled on an index of a group of  
intervals.
Why not pose the question in the form of example data.frames or other  
classes of R objects? Specification of the desired output would be  
essential. I think further specification of the sampling strategy  
would also help because I am unable to understand what sort of  
probability model you are hoping to apply.
> Any suggestions on that?
>
> Thanks a lot.
>
> Hadassa
>
>
> -- 
> Hadassa Brunschwig
> PhD Student
> Department of Statistics

David Winsemius, MD
Heritage Laboratories
West Hartford, CT