cwhmisc (version 2.1)

tri: Ternary or Triangular Plots.

Description

plotCI plots in a triangle the values of three variables. Useful for mixtures (chemistry etc.).

Usage

tri(a, f, m, symb=2, grid=FALSE, ...)

Arguments

a

Vector of first variable.

f

Vector of second variable.

m

Vector of third variable.

symb

Symbol to be plotted

grid

Plot the grid: TRUE or FALSE

...

Additional parameters for plot

Value

• The function tri is called for its side effect to produce a plot. code{trigrid} is internal to tri.

Examples

# some random data in three variables
c1 <- runif(5, 10, 20)
c2 <- runif(5, 1, 5)
c3 <- runif(5, 15, 25)
# basic plot
tri(c1,c2,c3)
# plot with different symbols and a grid
tri(c1,c2,c3, symb=7, grid=TRUE)