Add Points to a Ternary Plot
Usage
ternary_points(x, y, z, ...)
# S4 method for numeric,numeric,numeric
ternary_points(x, y, z, type = "p", ...)
# S4 method for ANY,missing,missing
ternary_points(x, type = "p", ...)
Arguments
- x, y, z
A
numeric
vector giving the x, y and z ternary coordinates of a set of points. Ify
andz
are missing, an attempt is made to interpretx
in a suitable way (seegrDevices::xyz.coords()
).- ...
Further graphical parameters (see
graphics::par()
) may also be supplied as arguments, particularly, plotting character,pch
, character expansion,cex
and color,col
.- type
A
character
string indicating the type of plotting; actually any of the types as ingraphics::plot.default()
.
See also
Other geometries:
ternary_arrows()
,
ternary_lines()
,
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 points
ternary_plot(NULL, panel.first = ternary_grid())
ternary_points(coda, col = "red", pch = 16)