graph
violin plot
Alejandra Gonzalez-Beltran
Orlaith Burke
http://en.wikipedia.org/wiki/Violin_plot
and
Hintze, J. L. and R. D. Nelson (1998). Violin plots: a box plot-density trace synergism. The American Statistician, 52(2):181-4.
Philippe Rocca-Serra
a violin plot is a plot combining the features of box plot and kernel density plot. The violin plot is therefore similar to box plot but it incorporated in the display the probability density of the data at different values.
Typically violin plots will include a marker for the median of the data and a box indicating the interquartile range, as in standard box plots.
http://www.inside-r.org/packages/cran/vioplot/docs/vioplot
vioplot( x, ..., range=1.5, h, ylim, names, horizontal=FALSE,
col="magenta", border="black", lty=1, lwd=1, rectCol="black",
colMed="white", pchMed=19, at, add=FALSE, wex=1,
drawRect=TRUE)
ready for release