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#' Plot Simulated Color Blindness
#'
#' Shows colors in a plot with different types of simulated color blindness.
#' @param x A [`character`] vector of colors.
#' @example inst/examples/ex-anomalize.R
#' @author N. Frerebeau, V. Arel-Bundock
#' @family diagnostic tools
#' @export
plot_scheme_colourblind <- function(x) {
# Validation
if (!is.atomic(x) || !is.character(x))
stop("x must be a character vector of colors.")
n <- length(x)
col <- c(x, anomalize(x, 'deuteranopia'), anomalize(x, 'protanopia'),
anomalize(x, 'tritanopia'), anomalize(x, 'achromatopsia'))
xcoord <- seq(0, 1, length.out = n + 1)
ycoord <- rep(c(.8, .6, .4, .2, 0), each = n)
grid::grid.newpage()
grid::grid.rect(
x = grid::unit(utils::head(xcoord, -1), "npc"),
y = grid::unit(ycoord, "npc"),
width = grid::unit(1 / n, "npc"),
height = grid::unit(0.7 / 5, "npc"),
hjust = 0,
vjust = 0,
gp = grid::gpar(fill = col, col = col)
)
grid::grid.text(
label = c("Palette", "Deuteranopia", "Protanopia", "Tritanopia",
"Achromatopsia"),
x = grid::unit(0, 'npc'),
y = grid::unit(c(0.97, 0.77, 0.57, 0.37, 0.17), "npc"),
hjust = 0
)
}
#' @rdname plot_scheme_colourblind
#' @export
plot_scheme_colorblind <- plot_scheme_colourblind
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