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#' @export
#' @rdname geom_linerange
geom_errorbar <- function(mapping = NULL, data = NULL,
stat = "identity", position = "identity",
...,
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE) {
layer(
data = data,
mapping = mapping,
stat = stat,
geom = GeomErrorbar,
position = position,
show.legend = show.legend,
inherit.aes = inherit.aes,
params = list(
na.rm = na.rm,
...
)
)
}
#' @rdname ggplot2-ggproto
#' @format NULL
#' @usage NULL
#' @export
GeomErrorbar <- ggproto("GeomErrorbar", Geom,
default_aes = aes(colour = "black", size = 0.5, linetype = 1, width = 0.5,
alpha = NA),
draw_key = draw_key_path,
required_aes = c("x", "ymin", "ymax"),
setup_data = function(data, params) {
data$width <- data$width %||%
params$width %||% (resolution(data$x, FALSE) * 0.9)
transform(data,
xmin = x - width / 2, xmax = x + width / 2, width = NULL
)
},
draw_panel = function(data, panel_params, coord, width = NULL) {
GeomPath$draw_panel(new_data_frame(list(
x = as.vector(rbind(data$xmin, data$xmax, NA, data$x, data$x, NA, data$xmin, data$xmax)),
y = as.vector(rbind(data$ymax, data$ymax, NA, data$ymax, data$ymin, NA, data$ymin, data$ymin)),
colour = rep(data$colour, each = 8),
alpha = rep(data$alpha, each = 8),
size = rep(data$size, each = 8),
linetype = rep(data$linetype, each = 8),
group = rep(1:(nrow(data)), each = 8),
row.names = 1:(nrow(data) * 8)
)), panel_params, coord)
}
)