plot Method for tclust Objects
The plot method for classes tclust and tkmeans.
## S3 method for class 'tclust' plot(x, ...) ## S3 method for class 'tkmeans' plot(x, ...)
x |
The |
... |
Further (optional) arguments which specify the details of the resulting plot (see section "Further Arguments"). |
One and two dimensional structures are treated separately
(e.g. tolerance intervals/ellipses are displayed).
Higher dimensional structures are displayed by plotting the two first Fisher's
canonical coordinates (evaluated by discr_coords)
and derived from the final cluster assignments (trimmed observations are not
taken into account). plot.tclust.Nd can be called with one or
two-dimensional tclust-objects too.
The function fails, if "store.x = FALSE" is specified in
tclust, because the original data matrix is required
here.
xlab, ylab, xlim, ylim, pch, colArguments passed to plot().
mainThe title of the plot.
Use "/p" for displaying the chosen parameters alpha
and k or "/r" for plotting the chosen restriction (tclust only).
main.preAn optional string which is added to the plot's caption.
subA string specifying the subtitle of the plot.
Use "/p" (default) for displaying the chosen parameters alpha
and k, "/r" for plotting the chosen restriction (tclust only) and "/pr" for both.
sub1A secondary (optional) subtitle.
labelsA string specifying the type of labels to be drawn. Either "none"
(default), "cluster" or "observation" can be specified.
If specified, parameter pch is ignored.
textA vector of length n (the number of observations) containing strings
which are used as labels for each observation.
If specified, the parameters labels and pch are ignored.
by.clusterLogical value indicating whether parameters pch and col
refer to observations (FALSE) or clusters (TRUE).
jitter.yLogical value, specifying whether the drawn values shall be jittered in y-direction for better visibility of structures in 1 dimensional data.
tolThe tolerance interval.
95% tolerance ellipsoids (assuming normality) are plotted by default (tclust only).
tol.col, tol.lty, tol.lwdVectors of length k or 1 containing the col,
lty and lwd arguments for the tolerance ellipses/lines (tclust only).
Agustin Mayo Iscar, Luis Angel Garcia Escudero, Heinrich Fritz
#--- EXAMPLE 1------------------------------ sig <- diag (2) cen <- rep (1, 2) x <- rbind(mvtnorm::rmvnorm(360, cen * 0, sig), mvtnorm::rmvnorm(540, cen * 5, sig * 6 - 2), mvtnorm::rmvnorm(100, cen * 2.5, sig * 50) ) # Two groups and 10% trimming level a <- tclust (x, k = 2, alpha = 0.1, restr.fact = 12) plot (a) plot (a, labels = "observation") plot (a, labels = "cluster") plot (a, by.cluster = TRUE) #--- EXAMPLE 2------------------------------ x <- c( rnorm(72, 0, 1), rnorm(108, 10, 1), rnorm(20, 2.5, 10)) a <- tkmeans (x, k = 2, alpha = 0.1) plot (a, jitter.y = TRUE)
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