/
tableau.R
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tableau.R
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##' Tableau Color Palettes (discrete)
##'
##' Color palettes used by
##' \href{http://www.tableausoftware.com/}{Trableau}.
##'
##' @export
##' @param palette Palette name
##' @references
##' \url{http://vis.stanford.edu/color-names/analyzer/}
##'
##' Maureen Stone, "Designing Colors for Data" (slides), at the
##' International Symposium on Computational Aesthetics in Graphics,
##' Visualization, and Imaging, Banff, AB, Canada, June 22, 2007
##' \url{http://www.stonesc.com/slides/CompAe\%202007.pdf}.
##'
##' Heer, Jeffrey and Maureen Stone, 2012 "Color Naming Models for
##' Color Selection, Image Editing and Palette Design", ACM Human
##' Factors in Computing Systems (CHI)
##' \url{http://vis.stanford.edu/files/2012-ColorNameModels-CHI.pdf}.
##'
##' @family colour tableau
##' @examples
##' library(scales)
##' show_col(tableau_color_pal("tableau20")(20))
##' show_col(tableau_color_pal("tableau10")(10))
##' show_col(tableau_color_pal("tableau10medium")(10))
##' show_col(tableau_color_pal("tableau10light")(10))
##' show_col(tableau_color_pal("colorblind10")(10))
##' show_col(tableau_color_pal("trafficlight")(10))
##' show_col(tableau_color_pal("purplegray12")(12))
##' show_col(tableau_color_pal("bluered12")(12))
##' show_col(tableau_color_pal("greenorange12")(12))
##'
tableau_color_pal <- function(palette = "tableau10") {
palettelist <- ggthemes_data$tableau$colors
if (! palette %in%
c(names(palettelist), "tableau10", "tableau10light",
"purplegray6", "bluered6", "greenorange6")) {
stop(sprintf("%s is not a valid palette name", palette))
}
if (palette == "tableau10") {
types <- palettelist[["tableau20"]][seq(1, 20, by=2)]
} else if (palette == "tableau10light") {
types <- palettelist[["tableau20"]][seq(2, 20, by=2)]
} else if (palette == "purplegray6") {
types <- palettelist[["purplegray12"]][seq(1, 12, by=2)]
} else if (palette == "bluered6") {
types <- palettelist[["bluered12"]][seq(1, 12, by=2)]
} else if (palette == "greenorange6") {
types <- palettelist[["greenorange12"]][seq(1, 12, by=2)]
} else {
types <- palettelist[[palette]]
}
function(n) {
unname(types)[seq_len(n)]
}
}
##' Tableau color scales.
##'
##' Color scales used by
##' \href{http://www.tableausoftware.com/}{Trableau}.
##'
##' @inheritParams ggplot2::scale_colour_hue
##' @inheritParams tableau_color_pal
##' @family colour tableau
##' @rdname scale_color_tableau
##' @export
##' @seealso \code{\link{tableau_color_pal}} for references.
##' @examples
##' dsamp <- diamonds[sample(nrow(diamonds), 1000), ]
##' p <- qplot(carat, price, data=dsamp, colour=clarity) + theme_igray()
##' p + scale_colour_tableau()
##' p + scale_colour_tableau("tableau20")
##' p + scale_colour_tableau("tableau10medium")
##' p + scale_colour_tableau("tableau10light")
##' p + scale_colour_tableau("colorblind10")
##' p + scale_colour_tableau("trafficlight")
##' p + scale_colour_tableau("purplegray12")
##' p + scale_colour_tableau("bluered12")
##' p + scale_colour_tableau("greenorange12")
##'
scale_colour_tableau <- function (palette = "tableau10", ...) {
discrete_scale("colour", "tableau", tableau_color_pal(palette), ...)
}
#' @export
#' @rdname scale_color_tableau
scale_fill_tableau <- function (palette = "tableau10", ...) {
discrete_scale("fill", "tableau", tableau_color_pal(palette), ...)
}
#' @export
#' @rdname scale_color_tableau
scale_color_tableau <- scale_colour_tableau
##' Tabaleau Shape Palettes (discrete)
##'
##' Shape palettes used by
##' \href{http://www.tableausoftware.com/}{Trableau}.
##'
##' @export
##' @param palette Palette name
##' @family shape tableau
##' @examples
##' show_shapes(tableau_shape_pal()(5))
tableau_shape_pal <- function(palette="default") {
manual_pal(unname(ggthemes_data$tableau$shapes[[palette]]))
}
##' Tableau shape scales
##'
##' Shape scales used by
##' \href{http://www.tableausoftware.com/}{Trableau}.
##'
##' @export
##' @inheritParams tableau_shape_pal
##' @inheritParams ggplot2::scale_x_discrete
##' @family shape tableau
##' @examples
##' dsamp <- diamonds[sample(nrow(diamonds), 1000), ]
##' p <- qplot(carat, price, data=dsamp, shape=clarity)
##' p + scale_shape_tableau()
scale_shape_tableau <- function (palette = "default", ...) {
discrete_scale("shape", "tableau", tableau_shape_pal(palette), ...)
}