boxplotlegend function

Boxplotlegend

This function plots the legend in form of a boxplot. The symbols represent the different levels (e.g. whiskers, median, ...) of the boxplot.

boxplotlegend(X, Y, el, boxinfo, x.shift = 40000, xf = 10000, y.shift = 0.2,
y.scale = 130000, legend.title = "Legend", cex.legtit = 1, logscale = TRUE,
symb = c(1, 1, 16, 3, 3), ssize = c(1.5, 1, 0.3, 1, 1.5), accentuate = FALSE,
cex.scale = 0.8)

Arguments

• X: X-coordinates
• Y: Y-coordinates
• el: variable considered
• boxinfo: from boxplot(el) or boxplotlog(el)
• x.shift: shift in x-direction
• xf: width in x-direction
• y.shift: shift in y-direction (from title)
• y.scale: scale in y-direction
• legend.title: title for legend
• cex.legtit: cex of title for legend
• logscale: if TRUE plot boxplot in log-scale
• symb: symbols to be used (length 5!)
• ssize: symbol sizes to be used (length 5!)
• accentuate: if FALSE no symbols for the upper values (e.g. upper "hinge", upper whisker) are assigned
• cex.scale: cex for text "log-scale" for scale

Details

Takes the information provided by the argument boxinfo and plots a boxplot corresponding to the values. If there are no upper or/and lower outliers the symbols for the upper or/and lower whiskers will be ignored.

Returns

Plots the legend with respect to the boxplot and returns the symbols, size and the quantiles used for the legend.

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

#internal function, used in SymbLegend