ternary_coords: Transform compositional data into ternary plotting...

In coda.plot: Plots for Compositional Data

Transform compositional data into ternary plotting coordinates

Description

Convert a compositional dataset into ternary plotting coordinates under a given ternary_frame.

Usage

ternary_coords(frame, X, transform = TRUE, group = NULL)

Arguments

frame	A ternary_frame object.
X	A numeric matrix or data frame with exactly three columns.
transform	Logical. If TRUE, apply the frame transformation before converting to ternary coordinates. Default is TRUE.
group	Optional grouping variable of length nrow(X).

Value

A data frame with compositional columns c1, c2, c3, ternary coordinates .x, .y, and optionally group.

coda.plot documentation built on April 12, 2026, 9:06 a.m.