A Flexible Color Scale for Ternary Compositions
Template for Ternary Key
Breaks and Labels for Ternary Color Key
Compositional Centre
Sextant Scheme Legend
Ternary Balance Scheme Legend
Sextant Encoding of Ternary Composition
CIE-Lch Mixture of Ternary Composition
Interactive Tricolore Demonstration
Geometric Mean
Compositional Pertubation
Compositional Powering
Return Ternary Gridlines Centered Around Some Composition
Distance Between Points in Ternary Coordinates
Return the Limits of Ternary Coordinates
Centroid Coordinates of Sub-Triangles in Segmented Equilateral Triangl...
Vertex Coordinates of Sub-Triangles in Segmented Equilateral Triangle
For Ternary Coordinates P Return the Nearest Coordinate in Set C
Vertex Coordinates of Sextants in Equilateral Triangle
Return Surrounding Sextant of Barycentric Coordinates
Ternary Balance Color Scale
Ternary Sextant Color Scale
Validate Main Arguments
Validate Shared Parameters
Validate Tricolore Parameters
Validate TricoloreSextant Parameters
Compositional data consisting of three-parts can be color mapped with a ternary color scale. Such a scale is provided by the tricolore packages with options for discrete and continuous colors, mean-centering and scaling. See Jonas Schöley (2021) "The centered ternary balance scheme. A technique to visualize surfaces of unbalanced three-part compositions" <doi:10.4054/DemRes.2021.44.19>, Jonas Schöley, Frans Willekens (2017) "Visualizing compositional data on the Lexis surface" <doi:10.4054/DemRes.2017.36.21>, and Ilya Kashnitsky, Jonas Schöley (2018) "Regional population structures at a glance" <doi:10.1016/S0140-6736(18)31194-2>.