Visualization of color palettes in columns of color swatches.
swatchplot( x, ..., nrow = 20, border = NULL, sborder = NULL, off = NULL, mar = NULL, line = NULL, cex = NULL, font = 1:2 )
character vector/matrix (or list of character vectors/matrices) containing color hex codes.
further (possibly named) character vectors/matrices with color hex codes.
integer specifying the maximal number of rows of swatches. (The actual number might be lower in order to balance the rows used in each column.)
color for border of individual color rectangles. By default
color for border of the entire palette swatch. By default
numeric vector of length 2. Offset in horizontal and vertical direction
(specified as a fraction of the rectangle for one color). By default, the
horizontal offset is
numeric vector of length 4, specifying the margins of column of color swatches.
numeric. Line in which the palette names (if any) are printed in the margin.
numeric vectors of length 1 or 2. Specifications for the annotation text for the individual palettes and lists of palettes, respectively.
swatchplot invisibly returns a matrix with colors and annotations.
swatchplot is a convenience function for displaying
collections of palettes that can be specified as lists or matrices of
character color specifications. Essentially, the function just calls
rect but the value-added are the heuristics used
for choosing default labels, margins, spacings, borders. These are selected
to work well for
hcl_palettes and might need further tweaking
in future versions.
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
## swatches of several palette vectors swatchplot( "Hue" = sequential_hcl(5, h = c(0, 300), c = c(60, 60), l = 65), "Chroma" = sequential_hcl(5, h = 0, c = c(100, 0), l = 65, rev = TRUE, power = 1), "Luminance" = sequential_hcl(5, h = 260, c = c(25, 25), l = c(25, 90), rev = TRUE, power = 1), off = 0 )## swatches of named palette matrices bprg <- c("Blues", "Purples", "Reds", "Greens") swatchplot( "Single-hue" = t(sapply(paste(bprg, 2), sequential_hcl, n = 7)), "Single-hue (advanced)" = t(sapply(paste(bprg, 3), sequential_hcl, n = 7)), "Multi-hue (advanced)" = t(sapply(bprg, sequential_hcl, n = 7)), nrow = 5 )