Re: [R] group by quantiles

From: Frank E Harrell Jr <f.harrell_at_vanderbilt.edu>
Date: Tue, 18 Nov 2008 08:02:07 -0600

Daniel Brewer wrote:
> Hello,
>
> I was just wondering whether there is a quick way to divide a vector of
> data into four groups defined by the quantiles?
> i.e.
> 0-25%
> 25-50%
> 50-75%
> 75-100%
>
> Many thanks
>
> Dan
>

library(Hmisc)
cut2(x, g=4)

-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University

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