violinmplot: Combined violin plot with arithmetic mean and standard...
In violinmplot: Combination of violin plot with mean and standard deviation.

Description Usage Arguments Value Author(s) References See Also Examples

This function combines a violin plot from the package lattice with values for the arithmetic mean and standard deviation.

1	violinmplot(x, data, ...)

x

a formula describing the plot, typically of the form y ~ x.

data

the data frame containing values for any variables in the formula provided as argument x.

...

further arguments which are passed on to other functions used by this package. Possible arguments are as follows:

horizontal: Whether to display the plots horizontally. Defaults to TRUE.
grid: Whether to display grid lines. Defaults to TRUE

.

col.mean: color for the arithmetic mean. Defaults to "blue"
col.violin: fill color for the violin plot. Defaults to "transparent"

.

An object of calss "trellis". The update.trellis method can be used too update components of the object and the print.trellis method (usually called by default) will plot it on an appropriate plotting device.

Raphael W. Majeed

The package was developed for a 2009 German national survey of usability in healthcare IT. http://www.usabil-it.de/2009/ (in German)

Lattice

library(violinmplot)

## Sample data frame
x <- c(1,1,1,2,2,3, 1,2,2,3,3,3)
g <- c(1,1,1,1,1,1, 2,2,2,2,2,2)
f <- data.frame("Daten"=x,"Gruppe"=g)

## Display a horizontal violinmplot 
violinmplot( Gruppe ~ Daten, data=f )

## Same plot displayed vertically
violinmplot( Daten ~ Gruppe, data=f, horizontal=FALSE)