R: Barycentric plots

triperplines {klaR} | R Documentation

## Barycentric plots

### Description

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`).

### 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`.

### Value

a 2-column-matrix containing plot coordinates.

### Author(s)

Christian Röver, roever@statistik.tu-dortmund.de

### See Also

`triplot`, `tripoints`, `trilines`, `tritrafo`

### Examples

    triplot()  # empty plot
    triperplines(1/2, 1/3, 1/6)

[Package klaR version 0.6-12 Index]