Plots a visual overview of all available stem colour palettes, grouped by type
(nominal, diverging, sequential). Each row shows one palette's colours as tiles,
similar to RColorBrewer::display.brewer.all().
Plots a visual overview of all available stem colour palettes, grouped by type
(nominal, diverging, sequential). Each row shows one palette's colours as tiles,
similar to RColorBrewer::display.brewer.all().