Add Connected Line Segments to a Ternary Plot

## Usage

```
ternary_lines(x, y, z, ...)
# S4 method for numeric,numeric,numeric
ternary_lines(x, y, z, type = "l", ...)
# S4 method for ANY,missing,missing
ternary_lines(x, type = "l", ...)
```

## Arguments

- x, y, z
A

`numeric`

vector giving the x, y and z ternary coordinates of a set of points. If`y`

and`z`

are missing, an attempt is made to interpret`x`

in a suitable way (see`grDevices::xyz.coords()`

).- ...
Further graphical parameters (see

`graphics::par()`

) may also be supplied as arguments, particularly, line type,`lty`

, line width,`lwd`

, color,`col`

and for`type = "b"`

,`pch`

. Also the line characteristics`lend`

,`ljoin`

and`lmitre`

.- type
A

`character`

string indicating the type of plotting; actually any of the types as in`graphics::plot.default()`

.

## See also

Other geometries:
`ternary_arrows()`

,
`ternary_points()`

,
`ternary_polygon()`

,
`ternary_text()`

## Examples

```
## Compositional data
coda <- data.frame(
X = c(20, 60, 20, 20),
Y = c(20, 20, 60, 40),
Z = c(60, 20, 20, 40)
)
## Add lines
ternary_plot(NULL, panel.first = ternary_grid())
ternary_lines(coda, col = "red", lwd = 2)
```