hcl_color_picker: Graphical User Interface to Pick Colors in HCL Space
Description
The app visualizes colors either along the hue-chroma plane for a given luminance value or along the
luminance-chroma plane for a given hue. Colors can be entered by specifying the hue (H), chroma (C),
and luminance (L) values via sliders, by entering an RGB hex code, or by clicking on a color in the
hue-chroma or luminance-chroma plane. It is also possible to select individual colors and add them
to a palette for comparison and future reference.
Usage
hcl_color_picker(shiny.trace = FALSE)
choose_color(shiny.trace = FALSE)
Arguments
shiny.trace
logical: used for debugging the shiny interface.
Value
hclcolorpicker invisibly returns a vector of colors choosen.
If no colors have been selected NULL will be returned.
Details
choose_color is a convenience alias for hcl_color_picker to
go along with choose_palette. Another alias is hclcolorpicker.
References
Zeileis A, Fisher JC, Hornik K, Ihaka R, McWhite CD, Murrell P, Stauffer R, Wilke CO (2019).
“ccolorspace: A Toolbox for Manipulating and Assessing Colors and Palettes.”
arXiv:1903.06490, arXiv.org E-Print Archive. http://arxiv.org/abs/1903.06490