如何模拟将美学传递给ggplot2中的面板背景?
How to simulate passing an aesthetic to panel background in ggplot2?
我在这个堆栈溢出问题中读到了一种使用 geom_rect
模拟设置面板背景美学的巧妙方法。
Conditionally change panel background with facet_grid?
不幸的是,如果你想在绘图中放置其他颜色,它是行不通的。颜色混合,图例被污染。相反,我更希望颜色只适用于背景并且不会混合。我的另一个问题是:是否有一种方法适用于极坐标?
有关可重现的示例,请参见下面的代码:
pies <- data_frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"),
deepdish = c(rep(TRUE, 3), rep(FALSE, 2)))
p <- pies %>%
ggplot() +
geom_bar(aes(x = factor(1),
y = fraction,
fill = ingredient),
width = 0.6,
stat = "identity",
position = "fill") +
facet_wrap(~ pie) +
geom_rect(mapping = aes(fill = deepdish),
alpha = 0.1,
xmin = -Inf, xmax = Inf,
ymin=-Inf, ymax=Inf,
show.legend = FALSE)
p
p + coord_polar(theta = "y")
pies <- data_frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"),
deepdish = c(rep(TRUE, 3), rep(FALSE, 2)))
library(ggplot2)
library(dplyr)
p <- pies %>%
ggplot() +
geom_bar(aes(x = factor(1), y = fraction, fill = ingredient),
width = 0.6, stat = "identity", position = "fill") +
facet_wrap(~ pie) + coord_polar(theta = "y")
g <- ggplotGrob(p)
# Set manually the background color for each panel
g$grobs[[2]]$children[[1]]$children[[1]]$gp$fill <- "#88334466"
g$grobs[[3]]$children[[1]]$children[[1]]$gp$fill <- "#44338866"
library(grid)
grid.draw(g)
library(egg)
library(grid)
pies <- data.frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"))
dummy <- data.frame(x = 0, y = 0,
pie = c("hawaiian","pepperoni"),
deepdish = c("green","yellow"), stringsAsFactors = FALSE)
p <- ggplot(pies) +
facet_wrap(~ pie) +
geom_custom(data= dummy, mapping = aes(x = factor(0),
y = y,
data = deepdish),
grob_fun = function(x) rectGrob(gp=gpar(fill=x,col=NA)), inherit.aes = TRUE) +
geom_bar(aes(x = factor(1),
y = fraction,
fill = ingredient),
width = 0.6,
stat = "identity",
position = "fill")
p + coord_polar(theta = "y")
我在这个堆栈溢出问题中读到了一种使用 geom_rect
模拟设置面板背景美学的巧妙方法。
Conditionally change panel background with facet_grid?
不幸的是,如果你想在绘图中放置其他颜色,它是行不通的。颜色混合,图例被污染。相反,我更希望颜色只适用于背景并且不会混合。我的另一个问题是:是否有一种方法适用于极坐标?
有关可重现的示例,请参见下面的代码:
pies <- data_frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"),
deepdish = c(rep(TRUE, 3), rep(FALSE, 2)))
p <- pies %>%
ggplot() +
geom_bar(aes(x = factor(1),
y = fraction,
fill = ingredient),
width = 0.6,
stat = "identity",
position = "fill") +
facet_wrap(~ pie) +
geom_rect(mapping = aes(fill = deepdish),
alpha = 0.1,
xmin = -Inf, xmax = Inf,
ymin=-Inf, ymax=Inf,
show.legend = FALSE)
p
p + coord_polar(theta = "y")
pies <- data_frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"),
deepdish = c(rep(TRUE, 3), rep(FALSE, 2)))
library(ggplot2)
library(dplyr)
p <- pies %>%
ggplot() +
geom_bar(aes(x = factor(1), y = fraction, fill = ingredient),
width = 0.6, stat = "identity", position = "fill") +
facet_wrap(~ pie) + coord_polar(theta = "y")
g <- ggplotGrob(p)
# Set manually the background color for each panel
g$grobs[[2]]$children[[1]]$children[[1]]$gp$fill <- "#88334466"
g$grobs[[3]]$children[[1]]$children[[1]]$gp$fill <- "#44338866"
library(grid)
grid.draw(g)
library(egg)
library(grid)
pies <- data.frame(pie = c(rep("hawaiian", 3), rep("pepperoni", 2)),
fraction = c(c(0.3, 0.2, 0.5), c(0.4, 0.6)),
ingredient = c("cheese", "pineapple", "ham",
"peperroni", "cheese"))
dummy <- data.frame(x = 0, y = 0,
pie = c("hawaiian","pepperoni"),
deepdish = c("green","yellow"), stringsAsFactors = FALSE)
p <- ggplot(pies) +
facet_wrap(~ pie) +
geom_custom(data= dummy, mapping = aes(x = factor(0),
y = y,
data = deepdish),
grob_fun = function(x) rectGrob(gp=gpar(fill=x,col=NA)), inherit.aes = TRUE) +
geom_bar(aes(x = factor(1),
y = fraction,
fill = ingredient),
width = 0.6,
stat = "identity",
position = "fill")
p + coord_polar(theta = "y")