[R] Quantiles of data in a contingency table

[Unung Istopo Hartanto]

Try.

median(rep(data$size, data$count))

thanks,

regards,

On Thu, 2005-03-17 at 14:42, Matt Mohebbi wrote:
> Hello, 
> 
> I have data of the following form:
> 
> > data <- data.frame(type=c("c","d","e"), size=c(10,20,30), count=c(20,10,5))
> > data
>   type size count
> 1    c   10    20
> 2    d   20    10
> 3    e   30     5
> 
> I would like to compute the quantiles of size given the counts. For
> instance, in this example, the median size would be 10. Is there an
> easy way of doing this?
> 
> Is there a good way to deal with data in this format in general? Much
> of R seems to center around having an entry for each item. This
> question (http://www.r-project.org/nocvs/mail/r-help/2000/0102.html)
> seems to be related but no one provided an answer.
> 
> Thanks, 
> Matt
> 

-- 
Unung Istopo Hartanto <unung at enciety.com>
ENCIETY Business Consult