ternary_diagram: Ternary Diagram

In coda.plot: Plots for Compositional Data

Ternary Diagram

Description

Generates a ternary diagram from compositional data, with options to center, scale, and color the points by group. Optionally overlays principal components.

Usage

ternary_diagram(
  X,
  group = NULL,
  center = FALSE,
  scale = FALSE,
  show_pc = FALSE
)

Arguments

X	A numeric matrix or data frame of compositional data with exactly three columns.
group	A factor or character vector indicating groups for color coding (optional).
center	Logical. Should the data be centered before plotting? Default is FALSE.
scale	Logical. Should the data be scaled to unit variance? Default is FALSE.
show_pc	Logical. If TRUE, principal components are overlaid. Default is FALSE.

Value

A ggtern plot object (inherits from ggplot).

Examples

X = milk_cows[,5:7]
group = milk_cows$group
ternary_diagram(X, group = group)

coda.plot documentation built on June 8, 2025, 12:12 p.m.