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st: -eqprhistogram- revised on SSC


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsph.harvard.edu>
Subject   st: -eqprhistogram- revised on SSC
Date   Fri, 6 Jun 2003 13:23:22 +0100

Thanks to Kit Baum, -eqprhistogram- has been revised
on SSC. This draws equal probability histograms, as
explained in previous postings, or the help file.

The changes:

1. I added some references to the help:

This kind of graph has been discussed by, for example, Breiman (1973,
pp.208-9) and Scott (1992, pp.69-70).  Breiman points out that the
associated error will be approximately a constant multiple of the bar
heights, so long as the bin frequencies are not too small.

Breiman, L. 1973. Statistics: with a view towards applications.
Boston:
Houghton Mifflin.

Scott, D.W. 1992.  Multivariate density estimation: theory, practice,
and
visualization.  New York: John Wiley.

I would much appreciate details of any earlier or fuller discussions.

2. Two new options:

-mean- adds a dashed line indicating the mean of the data.

-plot(plot)- provides a way to add other plots to the generated graph;
in particular, you can now superimpose a kernel density estimate.

Nick
n.j.cox@durham.ac.uk

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