TernaryTiles {Ternary} | R Documentation |
Function to fill a ternary plot with coloured tiles. Useful in combination with
TernaryPointValues
and TernaryContour
.
TernaryTiles( x, y, down, resolution, col, direction = getOption("ternDirection", 1L) )
x, y |
Numeric vectors specifying x and y coordinates of centres of each triangle. |
down |
Logical vector specifying |
resolution |
The number of triangles whose base should lie on the longest axis of the triangle. Higher numbers will result in smaller subdivisions and smoother colour gradients, but at a computational cost. |
col |
Vector specifying the colour with which to fill each triangle. |
direction |
(optional) Integer specifying the direction that the current ternary plot should point: 1, up; 2, right; 3, down; 4, left. |
Martin R. Smith (martin.smith@durham.ac.uk)
Other functions for colouring and shading:
ColourTernary()
FunctionToContour <- function (a, b, c) { a - c + (4 * a * b) + (27 * a * b * c) } TernaryPlot() values <- TernaryPointValues(FunctionToContour, resolution = 24L) ColourTernary(values) TernaryContour(FunctionToContour, resolution=36L)