248 lines
6.3 KiB
R
248 lines
6.3 KiB
R
#' Color scale constructor for REACH or AGORA colors
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#'
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#' @param initiative Either "reach" or "agora" or "default".
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#' @param palette Palette name from `pal_reach()` or `pal_agora()`.
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#' @param discrete Boolean indicating whether color aesthetic is discrete or not.
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#' @param reverse Boolean indicating whether the palette should be reversed.
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#' @param reverse_guide Boolean indicating whether the guide should be reversed.
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#' @param ... Additional arguments passed to discrete_scale() or
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#' scale_fill_gradient(), used respectively when discrete is TRUE or FALSE.
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#'
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#' @return A color scale for ggplot
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#'
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#' @export
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scale_color <- function(initiative = "reach", palette = "main", discrete = TRUE, reverse = FALSE, reverse_guide = TRUE, ...) {
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if (initiative == "reach") {
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pal <- pal_reach(palette)
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if (is.null(pal)) {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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rlang::warn(
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c(
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paste0("There is no palette '", palette, "' for the selected initiative. Fallback to pal_fallback()."),
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"i" = paste0("Use `pal_reach(show_palettes = TRUE)` to see the list of available palettes.")
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)
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)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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pal <- pal_reach(
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palette = palette,
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reverse = reverse,
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color_ramp_palette = TRUE,
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show_palettes = FALSE
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)
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}
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} else if (initiative == "agora") {
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pal <- pal_agora(palette)
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if (is.null(pal)) {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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rlang::warn(
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c(
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paste0("There is no palette '", palette, "' for the selected initiative. Fallback to pal_fallback()."),
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"i" = paste0("Use `pal_reach(show_palettes = TRUE)` to see the list of available palettes.")
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)
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)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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pal <- pal_agora(
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palette = palette,
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reverse = reverse,
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color_ramp_palette = TRUE,
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show_palettes = FALSE
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)
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}
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} else if (initiative == "default") {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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rlang::abort(
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c(
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paste0("There is no initiative '", initiative, "."),
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"i" = paste0("initiative should be either 'reach', 'agora' or 'default'")
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)
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)
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}
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if (discrete) {
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ggplot2::discrete_scale(
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"colour",
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paste0(initiative, "_", palette),
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palette = pal,
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guide = ggplot2::guide_legend(
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title.position = "top",
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draw.ulim = TRUE,
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draw.llim = TRUE,
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ticks.colour = "#F1F3F5",
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reverse = reverse_guide
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),
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...
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)
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} else {
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ggplot2::scale_color_gradientn(
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colours = pal(256),
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guide = ggplot2::guide_colorbar(
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title.position = "top",
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draw.ulim = TRUE,
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draw.llim = TRUE,
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ticks.colour = "#F1F3F5",
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reverse = reverse_guide
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),
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...
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)
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}
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}
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#' Fill scale constructor for REACH or AGORA colors
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#'
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#' @param initiative Either "reach" or "agora" or "default".
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#' @param palette Palette name from `pal_reach()` or `pal_agora()`.
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#' @param discrete Boolean indicating whether color aesthetic is discrete or not.
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#' @param reverse Boolean indicating whether the palette should be reversed.
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#' @param reverse_guide Boolean indicating whether the guide should be reversed.
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#' @param ... Additional arguments passed to discrete_scale() or
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#' scale_fill_gradient(), used respectively when discrete is TRUE or FALSE.
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#'
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#' @return A fill scale for ggplot.
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#'
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#' @export
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scale_fill <- function(initiative = "reach", palette = "main", discrete = TRUE, reverse = FALSE, reverse_guide = TRUE, ...) {
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if (initiative == "reach") {
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pal <- pal_reach(palette)
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if (is.null(pal)) {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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rlang::warn(
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c(
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paste0("There is no palette '", palette, "' for the selected initiative. Fallback to pal_fallback()."),
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"i" = paste0("Use `pal_reach(show_palettes = TRUE)` to see the list of available palettes.")
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)
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)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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pal <- pal_reach(
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palette = palette,
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reverse = reverse,
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color_ramp_palette = TRUE,
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show_palettes = FALSE
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)
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}
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} else if (initiative == "agora") {
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pal <- pal_agora(palette)
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if (is.null(pal)) {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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rlang::warn(
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c(
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paste0("There is no palette '", palette, "' for the selected initiative. Fallback to pal_fallback()."),
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"i" = paste0("Use `pal_reach(show_palettes = TRUE)` to see the list of available palettes.")
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)
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)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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pal <- pal_agora(
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palette = palette,
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reverse = reverse,
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color_ramp_palette = TRUE,
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show_palettes = FALSE
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)
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}
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} else if (initiative == "default") {
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pal <- pal_fallback(
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reverse = reverse,
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discrete = discrete,
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color_ramp_palette = TRUE)
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if (discrete) palette <- "viridis" else palette <- "magma"
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} else {
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rlang::abort(
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c(
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paste0("There is no initiative '", initiative, "."),
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"i" = paste0("initiative should be either 'reach', 'agora' or 'default'")
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)
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)
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}
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if (discrete) {
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ggplot2::discrete_scale(
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"fill",
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paste0(initiative, "_", palette),
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palette = pal,
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guide = ggplot2::guide_legend(
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title.position = "top",
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draw.ulim = TRUE,
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draw.llim = TRUE,
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ticks.colour = "#F1F3F5",
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reverse = reverse_guide
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),
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...
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)
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} else {
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ggplot2::scale_color_gradientn(
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colours = pal(256),
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guide = ggplot2::guide_colorbar(
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title.position = "top",
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draw.ulim = TRUE,
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draw.llim = TRUE,
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ticks.colour = "#F1F3F5",
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reverse = reverse_guide
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),
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...
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)
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}
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}
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