These are included here because pals depends on a number of compiled packages, and this can lead to increases in run time for Travis, and generally should be avoided when possible.
DiscretePalette(n, palette = NULL)Number of colours to be generated.
Options are "alphabet", "alphabet2", "glasbey", "polychrome", and "stepped". Can be omitted and the function will use the one based on the requested n.
A vector of colors
These palettes are a much better default for data with many classes than the default ggplot2 palette.
Many thanks to Kevin Wright for writing the pals package.
Taken from the pals package (Licence: GPL-3). https://cran.r-project.org/package=pals Credit: Kevin Wright