[R] Histogram with equal-counts (-probability)

Uwe Ligges ligges at statistik.uni-dortmund.de
Sun Dec 5 22:16:47 CET 2004

Hamish Macintyre wrote:
> I would like to use R to generate a histogram which has bars of variable bin
> width with each bar having an equal number of counts. For example, if the
> bin limits are the quartiles, each bar would represent 1/4 of the total
> probability in the distribution.
> An example of such an equal-probability histogram is presented by Nicholas
> Cox at http://www.stata.com/support/faqs/graphics/histvary.html.

So you can calculate the quartiles using the quantiles() function and 
set those quartiles as breaks in hist().

Uwe Ligges

> Thanks,
> Hamish
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