refactor colormaps in shiny application

[cpanse]

recmap/inst/shiny-examples/server.R

Line 6 in ea48efa

library(colorspace)

recmap/inst/shiny-examples/server.R

Line 83 in ea48efa

list(colorspace_heat_hcl = heat_hcl(12, c = c(80, 30), l = c(30, 90), power = c(1/5, 2)),

use R version >= 3.6 - grDevices::hcl; grDevices::hcl.colors; grDevices::hcl.pals;

R> par(mfrow = c(2, 2))
R> pie(rep(1, 12), col = rainbow(12), main = "RGB/HSV")
R> pie(rep(1, 12), col = hcl.colors(12, "Set 2"), main = "HCL")

see also

• https://twitter.com/AchimZeileis/status/1167591523355176960
• https://www.r-bloggers.com/colorspace-new-tools-for-colors-and-palettes/