
Last chance! 50% off unlimited learning
Sale ends in
Visualizes compositional, 3-dimensional data in an equilateral triangle.
ternaryplot(x, scale = 1, dimnames = NULL,
dimnames_position = c("corner","edge","none"),
dimnames_color = "black", dimnames_rot = c(-60, 60, 0),
id = NULL, id_color = "black",
id_just = c("center", "center"),
coordinates = FALSE, grid = TRUE, grid_color = "gray",
labels = c("inside", "outside", "none"),
labels_color = "darkgray", labels_rot = c(120, -120, 0),
border = "black", bg = "white",
pch = 19, cex = 1, prop_size = FALSE, col = "red",
main = "ternary plot", newpage = TRUE, pop = TRUE,
return_grob = FALSE, ...)
a matrix with three columns.
row sums scale to be used.
dimension labels (defaults to the column names of
x
).
position and color of dimension labels.
Numeric vector of length 3, specifying the angle of the dimension labels.
optional labels to be plotted below the plot
symbols. coordinates
and id
are mutual exclusive.
color of these labels.
character vector of length 1 or 2 indicating the justification of these labels.
if TRUE
, the coordinates of the points are
plotted below them. coordinates
and id
are mutual
exclusive.
if TRUE
, a grid is plotted. May optionally
be a string indicating the line type (default: "dotted"
).
grid color.
position and color of the grid labels.
Numeric vector of length 3, specifying the angle of the grid labels.
color of the triangle border.
triangle background.
plotting character. Defaults to filled dots.
a numerical value giving the amount by which plotting text
and symbols should be scaled relative to the default. Ignored for
the symbol size if prop_size
is not FALSE
.
if TRUE
, the symbol size is plotted
proportional to the row sum of the three variables, i.e., represents
the weight of the observation.
plotting color.
main title.
if TRUE
, the plot will appear on a new graphics
page.
logical; if TRUE
, all newly generated viewports are popped after plotting.
logical. Should a snapshot of the display be returned as a grid grob?
additional graphics parameters (see par
)
David Meyer David.Meyer@R-project.org
A points' coordinates are found by computing the gravity center of
mass points using the data entries as weights. Thus, the coordinates
of a point
M. Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.
data("Arthritis")
## Build table by crossing Treatment and Sex
tab <- as.table(xtabs(~ I(Sex:Treatment) + Improved, data = Arthritis))
## Mark groups
col <- c("red", "red", "blue", "blue")
pch <- c(1, 19, 1, 19)
## plot
ternaryplot(
tab,
col = col,
pch = pch,
prop_size = TRUE,
bg = "lightgray",
grid_color = "white",
labels_color = "white",
main = "Arthritis Treatment Data"
)
## legend
grid_legend(0.8, 0.7, pch, col, rownames(tab), title = "GROUP")
## Titanic
data("Lifeboats")
attach(Lifeboats)
ternaryplot(
Lifeboats[,4:6],
pch = ifelse(side == "Port", 1, 19),
col = ifelse(side == "Port", "red", "blue"),
id = ifelse(men / total > 0.1, as.character(boat), NA),
prop_size = 2,
dimnames_position = "edge",
main = "Lifeboats on Titanic"
)
grid_legend(0.8, 0.9, c(1, 19),
c("red", "blue"), c("Port", "Starboard"),
title = "SIDE")
## Hitters
data("Hitters")
attach(Hitters)
colors <- c("black","red","green","blue","red","black","blue")
pch <- substr(levels(Positions), 1, 1)
ternaryplot(
Hitters[,2:4],
pch = as.character(Positions),
col = colors[as.numeric(Positions)],
main = "Baseball Hitters Data"
)
grid_legend(0.8, 0.9, pch, colors, levels(Positions),
title = "POSITION(S)")
Run the code above in your browser using DataLab