triax.points {plotrix}R Documentation

Triangle plot points

Description

Display points on a triangle plot.

Usage

 triax.points(x,show.legend=FALSE,label.points=FALSE,point.labels=NULL,
 col.symbols=par("fg"),pch=par("pch"),bg.symbols=par("bg"),...)

Arguments

x Matrix or data frame where each row is three proportions or percentages that must sum to 1 or 100 respectively.
show.legend Logical - whether to display a legend.
label.points Logical - whether to call thigmophobe.labels to label the points.
point.labels Optional labels for the points and/or legend.
col.symbols Color of the symbols representing each value.
pch Symbols to use in plotting values.
bg.symbols Background color for plotting symbols.
... Additional arguments passed to points.

Details

triax.points displays each triplet of proportions or percentages as a symbol on the triangle plot. Unless each triplet sums to 1 (or 100), they will not plot properly and triax.points will complain appropriately.

Value

A list of the x,y positions plotted.

Author(s)

Jim Lemon

See Also

triax.plot,thigmophobe.labels

Examples

 data(soils)
 triax.plot(soils[1:10,],main="Adding points to a triangle plot")
 if(dev.interactive()) par(ask=TRUE)
 triax.points(soils[11:20,],col.symbols="green",pch=3)
 if(dev.interactive()) par(ask=FALSE)

[Package plotrix version 2.1-5 Index]