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Ternary

'Ternary' is an R package that allows the creation of ternary plots (a.k.a. ternary graphs / simplex plots / Gibbs triangles / de Finetti diagrams) and Holdridge life zone diagrams using the familiar functions of the default 'graphics' package.

For simple use cases, generate ternary plots using the point-and-click Shiny app:

install.packages("Ternary")
Ternary::TernaryApp()

For greater control over your plots, use the R command line; usage instructions are available for Ternary plots (with an introductory vignette for R beginners), and for Holdridge plots.

Install the development version from GitHub with

devtools::install_github("ms609/Ternary", args = "--recursive")

This requires git to be installed and added to your PATH system environment variable. You may also require the 'curl' R package.

Please let me know of any feature requests or bugs by opening an issue on GitHub.

Citation

You can cite this package as:

Smith, Martin R. (2017). Ternary: An R Package for Creating Ternary Plots. Comprehensive R Archive Network, doi:10.5281/zenodo.1068996.

See also

The R package 'ggtern' implements ternary plots within the 'ggplot2' framework.

Please note that the 'Ternary' project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.

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Version

Install

install.packages('Ternary')

Monthly Downloads

1,502

Version

2.3.3

License

GPL (>= 2)

Issues

Pull Requests

Stars

Forks

Repository

https://github.com/ms609/Ternary/

Homepage

https://ms609.github.io/Ternary/

Maintainer

Martin R. Smith

Last Published

August 27th, 2024

Functions in Ternary (2.3.3)

Convert ternary coordinates to Cartesian space

Paint tiles on ternary plot

TernaryDensityContour

Add contours of estimated point density to a ternary plot

Add contours to a ternary plot

TernaryPointValues

Value of a function at regularly spaced points

X and Y coordinates of ternary plotting area

TriangleCentres

Coordinates of triangle mid-points

Graphical user interface for creating ternary plots

Does triangle overlap convex hull of points?

Create a ternary plot

Set plotting region

Cartesian coordinates to ternary point

Palettes compatible with colour blindness

holdridgeClasses

Names of the 38 classes defined with the Holdridge system

Random sample of points for Holdridge plotting

Is a point in the plotting area?

Polygon-Geometry

Polygon geometry

ReflectedEquivalents

Reflected equivalents of points outside the ternary plot

Colour a ternary plot according to the output of a function

Annotate points on a ternary plot

Plot life zones on a Holdridge plot

Add elements to ternary or Holdridge plot

Convert user-specified ternary coordinates into X and Y coordinates

HoldridgeHypsometricCol

Convert a point in evapotranspiration-precipitation space to an appropriate cross-blended hypsometric colour

Ternary-package

The 'Ternary' package allows the creation of ternary plots (a.k.a. ternary graphs / simplex plots / Gibbs triangles / de Finetti diagrams) using the familiar functions of the default 'graphics' package.