beginner question, how can I overlap two violin plots

[Qingyang Li]

Dear all,

I was trying to make a figure using ggplot2 in R to get one violin plot on top of another, like what's in the first 2 panels in the example below. Does any one know how to do this in R?

link to the article!

Thanks!

Yang

[Brandon Hurr]

Two geom_violin layers with alpha should work. If you have some example data, I'm sure someone could help more. 

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[Hadley Wickham]

Would you mind sending your question to the ggplot2 mailing list?  This is the development mailing list.

Hadley

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[Qingyang Li]

@Brandon, thank you very much for the hint.

@Hadley, sorry, I will move the discusstion of the ggplot2 mailing list.

Yang

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Qingyang Li

Balance and focus.