Ternary v2.3.6 (2026-02-02)

• Upgrade Annotate() to use LAPJV in place of Hungarian algorithm.

Ternary v2.3.5 (2025-09-03)

• Fix location of Annotate() annotations with TernaryPlot(region = *).
• Deprecate functions that have moved to PlotTools.
• Increase oldest tested version from R3.6 to R4.0.

Ternary v2.3.4 (2025-05-07)

• Tweak documentation to clarify point colouring and contour vectorization.
• Move contour documentation from vignette to documentation page.

Ternary v2.3.3 (2024-08-27)

• Support plotting of c(0, 0, 0), at origin.
• Require R 3.6.
• Remove ‘viridis’ dependency.

Ternary v2.3.2 (2024-07-25)

• Document reading data into R in vignette for new users.
• Provide package anchors in documentation pages.

Ternary v2.3.1 (2024-02-06)

• Improve support for region parameter.

Ternary v2.3.0 (2024-01-08)

• region parameter plots a sub-region of the ternary space.
• Support ... in TernaryContour(Func = function(...)) (#81).

Ternary v2.2.1 (2023-06-28)

• Polygon-Geometry now imported from PlotTools. Aliases of these functions are provided but will be removed in a later version of this package.
• Use characters, not numerics, for version number checks (see https://bugs.r-project.org/show_bug.cgi?id=18548).

Ternary v2.2.0 (2023-05-11)

• New function Annotate() annotates points on ternary plot.
• New option filled to produce filled contour lines in TernaryContour() (#69).
• Improve clarity of point size plotting example.
• Native colour bar support in ColourTernary() (#66).
• Require R 3.5 (due to dependency on “rlang”).

Ternary v2.1.3 (2023-02-20)

• New vignette with annotation example (#64).

Ternary v2.1.2 (2022-11-07)

• Support independent labelling of axes.

Ternary v2.1.1 (2022-10-04)

• Fix regression that caused col parameter to be ignored.
• Fix failure to plot grid when grid.lines is integer.
• Mention srt graphical parameter in TernaryText() documentation.

Ternary v2.1.0 (2022-05-09)

• Colour sub-region of ternary plot with ColourTernary():
  • Add Polygon-Geometry functions for polygon manipulation.
  • Support NA values in ColourTernary().
• Tidy code formatting and catch typos.

Ternary v2.0.0 (2022-01-05)

• Create Holdridge plots using HoldridgePlot() and related functions (#48).
• Add panel.first and panel.last parameters to TernaryPlot() (fixing #54).
• Support graphical parameters (e.g. xpd) in TernaryPlot().
• Add introductory vignette for new R users.
• Help diagnose non-installation of app.

Ternary v1.2.4 (2021-12-03)

• Default to upward direction if TernaryPlot() not yet called.
• Improved input checking in TernaryPointValues() and TernaryContour(), (#53), and avoid unnecessary calculations.

Ternary v1.2.3 (2021-10-08)

• Fix bug in TernaryApp() when ‘colourpicker’ not previously installed.
• Update to ‘testthat’ edition 3.

Ternary v1.2.2 (2021-05-12)

• New vignette with interpolation example (#46).
• Document point styling in vignette.
• TernaryCoords(), alias TernaryToXY(), accepts matrices.

Ternary v1.2.1 (2020-12-09)

• Use package ‘vdiffr’ conditionally in tests.
• Trivial documentation improvements.

Ternary v1.2.0 (2020-10-17)

• Add Shiny user interface; launch with TernaryApp().
• Optional parameter axis.rotate to allow axis labels to be plotted ‘unrotated’ (https://github.com/ms609/Ternary/issues/38).
• Fix error in xtip.rotate (thanks @LSanselme).
• Add examples to documentation.

Ternary v1.1.4 (2020-02-27)

• Support user-specified colours in ColourTernary().
• More options for controlling axis colours in TernaryPlot().
• Add examples to documentation.
• axis.labels example in vignette.

Ternary v1.1.3 (2019-12-04)

• Use inherits, not class [https://developer.r-project.org/Blog/public/2019/11/09/when-you-think-class.-think-again].
• Obey user-specified direction in TernaryContour() and TernaryPointValues() (thanks @pkR-pjR).

Ternary v1.1.2 (2019-09-16)

• clockwise parameter allows plots to be configured in ‘flipped’ orientation (https://github.com/ms609/Ternary/issues/22)

Ternary v1.1.1 (2019-06-17)

• TernaryArrows adds arrows to a ternary plot.

Ternary v1.1.0 (2019-04-16)

New features

• Add support for contour plots and density shading.

Bug fixes

• Maintain isometry when one of xlim or ylim is specified.
• Fix issues with TernaryPlot() documentation.
• Remove names in TernaryCoords().

Ternary v1.0.2 (2018-10-31)

• Improve configuration options by allowing:
  • Custom colouration of axis text;
  • Modification of axis tick length.

Ternary v1.0.1 (2018-07-05)

• Plot minor lines between grid lines, with options to customise appearance.
• Document magnification options.

Ternary v1.0.0 (2017-12-21)

• Add function JoinTheDots() to plot lines and points simultaneously.
• Support xlim & ylim for TernaryPlot().
• Choose direction of plot using new point parameter.
• Allow labelling of tips and of sides (alab becomes atip).
• Improved control over labelling of plot (clab.rotate parameter).
• Improve documentation.

Ternary v0.1.1 (2017-11-23)

• Added colour-blind compatible colour palettes cbPalette8 and cbPalette15.
• Support lab.font in TernaryPlot().

Ternary v0.1.0 (2017-11-23)

• Generates ternary plots with vertical left axis.