rg.boxplot function

Plot a Boxplot

Plot a single horizontal boxplot, the default is a Tukey boxplot.

rg.boxplot(xx, xlab = deparse(substitute(xx)), log = FALSE, ifbw = FALSE,
wend = 0.05, xlim = NULL, main = " ", colr = 5, ...)

Arguments

• xx: data
• xlab: label for the x-axis
• log: if TRUE, a log-scaled plot and a logtransformation of the data
• ifbw: if TRUE, a IDEAS style box-and-whisker plot is produced
• wend: defines the end of the whisker, default is 5% and 95% quantile
• xlim: setting xlim results in outliers not being plotted as the x-axis is shortened.
• main: main title of the plot
• colr: the box is infilled with a yellow ochre; if no colour is required set colr=0
• ...: further graphical parameters for the plot

Returns

No return value, creates a plot.

Details

As the x-axis is shortend by setting xlim, however, the statistics used to define the boxplot, or box-and-whisker plot, are still based on the total data set. To plot a truncated data set create a subset first, or use the x[x<some.value] construct in the call.

References

C. Reimann, P. Filzmoser, R.G. Garrett, and R. Dutter: Statistical Data Analysis Explained. Applied Environmental Statistics with R. John Wiley and Sons, Chichester, 2008.

Author(s)

Peter Filzmoser <P.Filzmoser@tuwien.ac.at > http://cstat.tuwien.ac.at/filz/

Examples

data(chorizon)
Ba=chorizon[,"Ba"]
rg.boxplot(Ba,ifbw=TRUE,colr=0,xlab="Ba [mg/kg]",cex.lab=1.2)