Triangular Representation and Groups of points

Function to plot triangular data (i.e. dataframe with 3 columns of positive or null values) and a partition

Usage

triangle.class(ta, fac, col = rep(1, length(levels(fac))), 
    wt = rep(1, length(fac)), cstar = 1, cellipse = 0, axesell = TRUE, 
    label = levels(fac), clabel = 1, cpoint = 1, pch = 20, draw.line = TRUE, 
    addaxes = FALSE, addmean = FALSE, labeltriangle = TRUE, sub = "", csub = 1, 
    possub = "bottomright", show.position = TRUE, scale = TRUE, min3 = NULL, 
    max3 = NULL)

Arguments

ta

a data frame with 3 columns of null or positive numbers

fac

a factor of length the row number of ta

col

a vector of color for showing the groups

wt

a vector of row weighting for the computation of the gravity centers by class

cstar

a character size for plotting the stars between 0 (no stars) and 1 (complete star) for a line linking a point to the gravity center of its belonging class.

cellipse

a positive coefficient for the inertia ellipse size

axesell

a logical value indicating whether the ellipse axes should be drawn

label

a vector of strings of characters for the labels of gravity centers

clabel

if not NULL, a character size for the labels, used with par("cex")*clabel

cpoint

a character size for plotting the points, used with par("cex")*cpoint. If zero, no points are drawn

pch

if cpoint > 0, an integer specifying the symbol or the single character to be used in plotting points

draw.line

a logical value indicating whether the triangular lines should be drawn

addaxes

a logical value indicating whether the axes should be plotted

addmean

a logical value indicating whether the mean point should be plotted

labeltriangle

a logical value indicating whether the varliable labels of ta should be drawn on the triangular sides

sub

a string of characters for the graph title

csub

a character size for plotting the graph title

possub

a string of characters indicating the sub-title position ("topleft", "topright", "bottomleft", "bottomright")

show.position

a logical value indicating whether the sub-triangle containing the data should be put back in the total triangle

scale

a logical value for the graph representation : the total triangle (FALSE) or the sub-triangle (TRUE)

min3

if not NULL, a vector with 3 numbers between 0 and 1

max3

if not NULL, a vector with 3 numbers between 0 and 1. Let notice that min3+max3 must equal c(1,1,1)

Author

Daniel Chessel

Examples

if(!adegraphicsLoaded()) {
  data(euro123)
  par(mfrow = c(2, 2))
  x <- rbind.data.frame(euro123$in78, euro123$in86, euro123$in97)
  triangle.plot(x)
  triangle.class(x, as.factor(rep("G", 36)), csta = 0.5, cell = 1)
  triangle.class(x, euro123$plan$an)
  triangle.class(x, euro123$plan$pays)
  triangle.class(x, euro123$plan$an, cell = 1, axesell = TRUE)
  triangle.class(x, euro123$plan$an, cell = 0, csta = 0, 
    col = c("red", "green", "blue"), axesell = TRUE, clab = 2, cpoi = 2)
  triangle.class(x, euro123$plan$an, cell = 2, csta = 0.5, 
    axesell = TRUE, clab = 1.5)
  triangle.class(x, euro123$plan$an, cell = 0, csta = 1, scale = FALSE, 
    draw.line = FALSE, show.posi = FALSE)
  par(mfrow = c(2, 2))
}