UsingR: violinplot – R documentation

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violinplot

Plots violinplots instead of boxplots

Description

This function serves the same utility as side-by-side boxplots, only it provides more detail about the different distribution. It plots violinplots instead of boxplots. That is, instead of a box, it uses the density function to plot the density. For skewed distributions, the results look like "violins". Hence the name.

Usage

violinplot(x, ...)

Arguments

`x`	Either a sequence of variable names, or a data frame, or a model formula
`...`	You can pass arguments to polygon with this. Notably, you can set the color to red with col='red', and a border color with border='blue'

Value

Returns a plot.

Author(s)

John Verzani

References

This is really the boxplot function from R/base with some minor adjustments

Examples

## make a "violin"
x <- rnorm(100) ;x[101:150] <- rnorm(50,5)
violinplot(x,col="brown")
f<-factor(rep(1:5,30))
## make a quintet. Note also choice of bandwidth
violinplot(x~f,col="brown",bw="SJ")

UsingR

Data Sets, Etc. for the Text "Using R for Introductory Statistics", Second Edition

v2.0-6

GPL (>= 2)

Authors

John Verzani <verzani@math.csi.cuny.edu>

Initial release