Function to add a point and the corresponding perpendicular lines to all three
sides to an existing (barycentric) plot.
Usage
triperplines(x, y = NULL, z = NULL, lcol = "red", pch = 17, ...)
Arguments
x
fraction of first component
OR 3-element vector (for all three components, omitting y and z).
y
(optional) fraction of second component.
z
(optional) fraction of third component.
lcol
line color
pch
plotting character. pch = 0 for no point
...
Further graphical parameters (see points, lines and par).
Value
a 2-column-matrix containing plot coordinates.
encoding
latin1
concept
Visualizing Classification Performance Measures
Barycentric plots
Details
Adds a (single!) point and lines to an existing plot (generated by triplot).
The lines originate from the point and run (perpendicular) towards all three sides.
The lengths (and proportions) of these lines are identical to those of x, y and z.