[R] plotting overlapping data points

[Edward Hagen]

I am just learning to use R.  The data from my current project are
integer-valued.  I am able to create scatterplots, but I would like to
have some indication on the plots when multiple data points overlap at
the same x-y coordinate. SPSS uses 'petals', and other packages use
jitter.  Are there similar options in R?  I have not been able to find
any in the documentation.

Thanks very much,

Ed.

ps. Please respond to this email address as I am not subscribed to the
list.

-- 
Dr. Ed Hagen                     Humboldt-Universität zu Berlin
Innovationskolleg Theoretische Biologie  Invalidenstraße 43
phone: +49/30 2093-8649; fax: -8801      10115 Berlin, Germany
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