plotExtremes.ddsimcares: Extremes plot.

In mdatools: Multivariate Data Analysis for Chemometrics

Extremes plot.

Description

The method generates a sequence of values for significance level (alpha) and then computes how many extremes the model produces by applying it to the target class members. After that the computed number is plotted against the expected number.

The plot also shows a confidence ellipse for the expected values.

Usage

## S3 method for class 'ddsimcares'
plotExtremes(
  obj,
  ncomp = obj$ncomp.selected,
  limType = "classic",
  main = sprintf("Extremes (A = %d)", ncomp),
  xlab = "Number of extremes (expected)",
  ylab = "Number of extremes (observed)",
  col = "#2679b2",
  pch = 16,
  ellipse.col = "#eeeeee",
  show.plot = TRUE,
  ...
)

Arguments

obj	DD-SIMCA results (object of class ddsimcares)
ncomp	number of components in the model to show the plot for.
limType	limit type to show the plot for ('classic' or 'robust').
main	main title.
xlab	label for x-axis.
ylab	label for y-axis.
col	color of the plot points.
pch	color of the plot points.
ellipse.col	color of the confidence ellipse elements.
show.plot	logical, if FALSE returns only values and does not show the plot.
...	other parameters compatible with mdaplot method.

mdatools documentation built on March 6, 2026, 5:08 p.m.