EVOLUTION-MANAGER

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<h3>Authors</h3> <p>Claus O. Wilke, Reto Stauffer, Achim Zeileis </p> <h2>Graphical User Interface to Pick Colors in HCL Space</h2> <h3>Description</h3> <p>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. </p> <h3>Details</h3> <p><code>choose_color</code> is a convenience alias for <code>hcl_color_picker</code> to go along with <code>choose_palette</code>. Another alias is <code>hclcolorpicker</code>. </p> <h3>Value</h3> <p><code>hclcolorpicker</code> invisibly returns a vector of colors choosen. If no colors have been selected <code>NULL</code> will be returned. </p>