[R] ggplot question

From: Williams Scott <Scott.Williams_at_petermac.org>
Date: Thu, 24 Jul 2008 17:23:11 +1000


I am trying to do something simple with ggplot. I wish to draw a density plot split by group, and fill each group with a different colour (and each with an alpha =0.25). I have tried a number of variations of the following, but cannot find a way to define the colour of the fill, its transparency and the line around it individually - something in the syntax continues to defy me.  

ggplot(data.plot, aes(x=x, y=..density..))+

            geom_density(aes(group=group))  

I am sure a simple solution is out there. Any help appreciated,

Scott


Dr. Scott Williams

MBBS BScMed FRANZCR

Radiation Oncologist

Peter MacCallum Cancer Centre

Melbourne, Australia

ph +61 3 9656 1111

fax +61 3 9656 1424

scott.williams_at_petermac.org

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