Ternary Plot Matrices

Produces a matrix of ternary plots.

Usage

ternary_pairs(x, ...)

# S4 method for matrix
ternary_pairs(x, margin = NULL, ...)

# S4 method for data.frame
ternary_pairs(x, margin = NULL, ...)

Arguments

x

A matrix or a data.frame. Columns are converted to numeric in the same way that data.matrix() does.

...

Further graphical parameters.

margin

A character string or an integer giving the index of the column to be used as the third part of the ternary plots. If NULL (the default), marginal compositions will be used (i.e. the geometric mean of the non-selected parts).

Value

ternary_pairs() is called it for its side-effects: it results in a graphic being displayed. Invisibly returns x.

See also

Other graphical elements: ternary_axis(), ternary_box(), ternary_grid(), ternary_plot(), ternary_title()

Author

N. Frerebeau

Examples

## Data from Aitchison 1986
## Ternary plots with marginal compositions
ternary_pairs(boxite)


## Ternary plots with endite
ternary_pairs(boxite, margin = "E")