[R] Overlaying histograms

[Christian Hennig]

Hi,

is there a command for plotting two (or more) histograms in the same graph,
or is there a low-level plotting command for adding a second histogram (in
different color) to the graph of the first one?

Best,
Christian

-- 
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Christian Hennig
Seminar fuer Statistik, ETH-Zentrum (LEO), CH-8092 Zuerich (currently)
and Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg
hennig at stat.math.ethz.ch, http://stat.ethz.ch/~hennig/
hennig at math.uni-hamburg.de, http://www.math.uni-hamburg.de/home/hennig/
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