[R] quntile(table)?

[Greg Snow]

See the wtd.quantile function in the Hmisc package.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at intermountainmail.org
(801) 408-8111
 
 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Seung Jun
> Sent: Tuesday, August 28, 2007 8:23 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] quntile(table)?
> 
> Hi,
> 
> I have data in the following form:
> 
>   index  count
>     -7      32
>      1    9382
>      2    2192
>      7     190
>     11     201
> 
> I'd like to get quantiles from the data.  I thought about 
> something like this:
> 
>   index <- c(-7, 1, 2, 7, 11)
>   count <- c(32,  9382, 2192, 190, 201)
>   quantile(rep(index, count))
> 
> It answers correctly, but I feel it's wasteful especially 
> when count is generally large.  So, my question is, is there 
> a way to get quantiles directly from this table (without 
> coding at a low level)?
> 
> Thanks,
> Seung
> 
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