Changelog • Ternary

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

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

Improve support for region parameter.

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

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).

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”).

New vignette with annotation example (#64).

Support independent labelling of axes.

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.

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.

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.

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

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

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

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

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.

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

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).

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

TernaryArrows adds arrows to a ternary plot.

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().

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

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

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.

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

Generates ternary plots with vertical left axis.