Format or create colors for a vector with categorical values

Make sure that unique named colors are created for each value.

Usage

format_colors_cat(
  x,
  colors = NULL,
  palette = NULL,
  rev = FALSE,
  allow_duplicated = TRUE
)

format_colors(
  x,
  colors = NULL,
  palette = NULL,
  rev = FALSE,
  allow_duplicated = TRUE
)

format_colors_cat_strata(x, strata = NULL, palette = NULL, rev = FALSE)

Arguments

x

Vector of categorical values for which we want to specify colors.

colors

Vector of colors longer or equal the number of unique levels of x. Can be named or non-named. If NULL, colors are generated.

palette

List of length corresponding the number of levels in strata with colors or names of RColorBrewer palettes. E.g. `list("Blues", "Oranges", "Greens", "Purples", "Reds", "Greys")`

strata

Vector of categorical values of stratification groups.

Value

Named vector of unique colors for all unique values of x.

Examples

x <- c("low", "high")

colors <- c("high" = "red", "low" = "grey")
palette <- NULL
allow_duplicated <- FALSE


format_colors_cat(x, colors = colors, palette = palette, allow_duplicated = allow_duplicated)
#>    low   high 
#> "grey"  "red" 


x <- c("<1", "<2", "<3", "<4")

colors <- NULL
palette <- "RdYlBu"
allow_duplicated <- FALSE


out <- format_colors_cat(x, colors = colors, palette = palette, allow_duplicated = allow_duplicated)

barplot(rep(1, length(out)), col = out)