Carries out mapping between assorted color spaces including RGB, HSV, HLS,
             CIEXYZ, CIELUV, HCL (polar CIELUV), CIELAB and polar CIELAB.
	     Qualitative, sequential, and diverging color palettes based on HCL colors
	     are provided along with corresponding ggplot2 color scales.
	     Color palette choice is aided by an interactive app (with either a Tcl/Tk
	     or a shiny GUI) and shiny apps with an HCL color picker and a
	     color vision deficiency emulator. Plotting functions for displaying
	     and assessing palettes include color swatches, visualizations of the
	     HCL space, and trajectories in HCL and/or RGB spectrum. Color manipulation
	     functions include: desaturation, lightening/darkening, mixing, and
	     simulation of color vision deficiencies (deutanomaly, protanomaly, tritanomaly).

datasets, utils, KernSmooth, MASS, kernlab, mvtnorm, vcd,
tcltk, shiny, shinyjs, ggplot2, dplyr, scales, grid, png, jpeg,
knitr, rmarkdown, RColorBrewer, rcartocolor, scico, viridis

"Finding Groups in Data": Cluster Analysis Extended Rousseeuw et
al.

Methods for Cluster analysis.  Much extended the original from
	Peter Rousseeuw, Anja Struyf and Mia Hubert,
	based on Kaufman and Rousseeuw (1990) "Finding Groups in Data".

c(person("Martin","Maechler", role=c("aut","cre"), email="maechler@stat.math.ethz.ch")
 ,person("Peter", "Rousseeuw", role="aut", email="peter.rousseeuw@kuleuven.be",
         comment = "Fortran original")
 ,person("Anja", "Struyf", role="aut", comment= "S original")
 ,person("Mia", "Hubert", role="aut", email= "Mia.Hubert@uia.ua.ac.be", comment= "S original")
 ,person("Kurt", "Hornik", role=c("trl", "ctb"),
 	email="Kurt.Hornik@R-project.org", comment="port to R; maintenance(1999-2000)")
 ,person("Matthias", "Studer", role="ctb")
 ,person("Pierre", "Roudier", role="ctb")
 ,person("Juan",   "Gonzalez", role="ctb")
 ,person("Kamil",  "Kozlowski", role="ctb")
 )

two examples using MASS' cov.rob() and mvrnorm(); Matrix
tools for testing

Martin Maechler [aut, cre],
  Peter Rousseeuw [aut] (Fortran original),
  Anja Struyf [aut] (S original),
  Mia Hubert [aut] (S original),
  Kurt Hornik [trl, ctb] (port to R; maintenance(1999-2000)),
  Matthias Studer [ctb],
  Pierre Roudier [ctb],
  Juan Gonzalez [ctb],
  Kamil Kozlowski [ctb]