StatDA (version 1.7.11)

ternary: Ternary plot

Description

This plot shows the relative proportions of three variables in one diagramm. It is important that the proportion sum up to 100% and if the values of the variables are very different it is important to scale them to the same data range.

Usage

ternary(x, nam = NULL, grid = FALSE, ...)

Value

No return value, creates a plot.

Arguments

x

matrix with 3 columns

nam

names of the variables

grid

if TRUE the grid should be plotted

...

further graphical parameters, see par

Author

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

Details

The relative proportion of each variable is computed and those points are plotted into the graphic.

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.

Examples

data(moss)
x=moss[,c("Ni","Cu","Pb")]
ternary(x,grid=TRUE,pch=3,cex=0.7,col=1)