#-----------------------------------------------------------------------------
#' Scales for area or radius
#'
#' @param name,breaks,labels,limits,trans,guide,...,transform See [ggplot2::scale_size()] for more information
#' @param range a numeric vector of length 2 that specifies the minimum and
#' maximum size of the plotting symbol after transformation.
#' @return A [ggplot2::Scale] object.
#' @examples
#' if (require("ggplot2")) {
#' # 'circle' pattern example
#' df <- data.frame(level = c("a", "b", "c", 'd'), outcome = c(2.3, 1.9, 3.2, 1))
#' gg <- ggplot(df) +
#' geom_col_pattern(
#' aes(level, outcome, pattern_fill = level,
#' size = outcome, pattern_size = outcome),
#' pattern_density = 0.4,
#' pattern_spacing = 0.3,
#' pattern = 'circle',
#' fill = 'white',
#' colour = 'black'
#' ) +
#' theme_bw(18) +
#' theme(legend.position = 'none') +
#' scale_pattern_size() +
#' labs(
#' title = "ggpattern::geom_col_pattern()",
#' subtitle = "pattern = 'circle'"
#' )
#' plot(gg)
#' }
#'
#' @export
#-----------------------------------------------------------------------------
scale_pattern_size_continuous <- function(name = waiver(), breaks = waiver(), labels = waiver(),
limits = NULL, range = c(1, 6),
trans = deprecated(), guide = "legend",
..., transform = "identity") {
if (lifecycle::is_present(trans)) {{
lifecycle::deprecate_warn('1.1.1',
'scale_pattern_size_continuous(trans)',
'scale_pattern_size_continuous(transform)')
transform <- trans
}}
continuous_scale("pattern_size", palette = area_pal(range), name = name,
breaks = breaks, labels = labels, limits = limits, transform = transform,
guide = guide, ...)
}
#-----------------------------------------------------------------------------
#' @rdname scale_pattern_size_continuous
#' @export
#-----------------------------------------------------------------------------
scale_pattern_size <- scale_pattern_size_continuous
#-----------------------------------------------------------------------------
#' @rdname scale_pattern_size_continuous
#' @export
#' @usage NULL
#-----------------------------------------------------------------------------
scale_pattern_size_discrete <- function(...) {
scale_pattern_size_ordinal(...)
}
#-----------------------------------------------------------------------------
#' @rdname scale_pattern_size_continuous
#' @export
#' @usage NULL
#-----------------------------------------------------------------------------
scale_pattern_size_ordinal <- function(..., range = c(2, 6)) {
force(range)
discrete_scale(
"pattern_size",
palette = function(n) {
area <- seq(range[1] ^ 2, range[2] ^ 2, length.out = n)
sqrt(area)
},
...
)
}
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