Plots reference x, y and z arrows showing the direction of the axes in a static tetrahedral colourspace plot.
position of the legend relative to plot limits (usually a value between 0 and 1, but because of the perspective distortion, values greater than 1 are possible)
length of the arrows. Can be either a single value (applied for x, y and z) or a vector of 3 separate values for each axis.
size of the arrowhead.
graphical parameters for the arrows.
logical, include x, y and z labels (defaults to
position adjustment for the labels. a list of 3 named objects for x, y and z arrows, each with 2 values for x and y adjustment.
graphical parameters for the labels.
axistetra adds reference arrows showing the direction of the
3-dimensional axes in a static tetrahedral colourspace plot.