67 lines
4.4 KiB
R
67 lines
4.4 KiB
R
#' @title Return function to interpolate a REACH color palette
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#'
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#' @param palette Character name of a palette in REACH palettes
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#' @param reverse Boolean indicating whether the palette should be reversed
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#' @param color_ramp_palette Should the output be a `grDevices::colorRampPalette` function or a vector of hex codes? Default to the former with `TRUE`
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#' @param show_palettes Should the ouput be the set of palettes names to pick from? Default to `FALSE`
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#' @param ... Additional arguments to pass to colorRampPalette()
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#'
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#' @return A color palette
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#'
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#' @export
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pal_reach <- function(palette = "main", reverse = FALSE, color_ramp_palette = FALSE, show_palettes = FALSE, ...) {
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palettes_reach <- list(
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`main` = cols_reach("main_grey", "main_red", "main_lt_grey", "main_beige"),
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`primary` = cols_reach("main_grey", "main_red"),
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`secondary` = cols_reach("main_lt_grey", "main_beige"),
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`two_dots` = cols_reach("two_dots_1", "two_dots_2"),
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`two_dots_flashy` = cols_reach("two_dots_flashy_1", "two_dots_flashy_2"),
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`red_main` = cols_reach("red_main_1", "red_main_2", "red_main_3", "red_main_4", "red_main_5"),
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`red_main_5` = cols_reach("red_main_1", "red_main_2", "red_main_3", "red_main_4", "red_main_5"),
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`red_alt` = cols_reach("red_alt_1", "red_alt_2", "red_alt_3", "red_alt_4", "red_alt_5"),
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`red_alt_5` = cols_reach("red_alt_1", "red_alt_2", "red_alt_3", "red_alt_4", "red_alt_5"),
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`iroise` = cols_reach("iroise_1", "iroise_2", "iroise_3", "iroise_4", "iroise_5"),
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`iroise_5` = cols_reach("iroise_1", "iroise_2", "iroise_3", "iroise_4", "iroise_5"),
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`discrete_6` = cols_reach("dk_grey", "red_main_1", "main_beige", "red_main_2", "lt_grey_2", "red_4"),
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`red_2` = cols_reach("red_less_4_1", "red_less_4_3"),
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`red_3` = cols_reach("red_less_4_1", "red_less_4_2", "red_less_4_3"),
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`red_4` = cols_reach("red_less_4_1", "red_less_4_2", "red_less_4_3", "red_less_4_4"),
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`red_5` = cols_reach("red_5_1", "red_5_2", "red_5_3", "red_5_4", "red_5_5"),
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`red_6` = cols_reach("red_less_7_1", "red_less_2", "red_less_7_3", "red_less_7_4", "red_less_7_5", "red_less_7_6"),
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`red_7` = cols_reach("red_less_7_1", "red_less_7_2", "red_less_7_3", "red_less_7_4", "red_less_7_5", "red_less_7_6", "red_less_7_7"),
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`green_2` = cols_reach("green_2_1", "green_2_2"),
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`green_3` = cols_reach("green_3_1", "green_3_2", "green_3_3"),
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`green_4` = cols_reach("green_4_1", "green_4_2", "green_4_3", "green_4_4"),
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`green_5` = cols_reach("green_5_1", "green_5_2", "green_5_3", "green_5_4", "green_5_5"),
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`green_6` = cols_reach("green_6_1", "green_6_2", "green_6_3", "green_6_4", "green_6_5", "green_6_6"),
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`green_7` = cols_reach("green_7_1", "green_7_2", "green_7_3", "green_7_4", "green_7_5", "green_7_6", "green_7_7"),
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`artichoke_2` = cols_reach("artichoke_2_1", "artichoke_2_2"),
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`artichoke_3` = cols_reach("artichoke_3_1", "artichoke_3_2", "artichoke_3_3"),
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`artichoke_4` = cols_reach("artichoke_4_1", "artichoke_4_2", "artichoke_4_3", "artichoke_4_4"),
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`artichoke_5` = cols_reach("artichoke_5_1", "artichoke_5_2", "artichoke_5_3", "artichoke_5_4", "artichoke_5_5"),
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`artichoke_6` = cols_reach("artichoke_6_1", "artichoke_6_2", "artichoke_6_3", "artichoke_6_4", "artichoke_6_5", "artichoke_6_6"),
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`artichoke_7` = cols_reach("artichoke_7_1", "artichoke_7_2", "artichoke_7_3", "artichoke_7_4", "artichoke_7_5", "artichoke_7_6", "artichoke_7_7"),
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`blue_2` = cols_reach("blue_2_1", "blue_2_2"),
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`blue_3` = cols_reach("blue_3_1", "blue_3_2", "blue_3_3"),
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`blue_4` = cols_reach("blue_4_1", "blue_4_2", "blue_4_3", "blue_4_4"),
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`blue_5` = cols_reach("blue_5_1", "blue_5_2", "blue_5_3", "blue_5_4", "blue_5_5"),
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`blue_6` = cols_reach("blue_6_1", "blue_6_2", "blue_6_3", "blue_6_4", "blue_6_5", "blue_6_6"),
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`blue_7` = cols_reach("blue_7_1", "blue_7_2", "blue_7_3", "blue_7_4", "blue_7_5", "blue_7_6", "blue_7_7")
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)
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if (show_palettes) return(names(palettes_reach))
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pal <- palettes_reach[[palette]]
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if (reverse) pal <- rev(pal)
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if (color_ramp_palette) {
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rlang::check_installed("grDevices", reason = "Package \"grDevices\" needed for `pal_reach()` woth 'color_ramp_palette' set to `TRUE` to work. Please install it.")
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pal <- grDevices::colorRampPalette(pal, ...)
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}
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return(pal)
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}
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