使用基于密度的梯度在 R 中创建条形图
Create barplot in R with gradient based on density
我想像在箱线图、小提琴图或蜂群中那样表示多个变量的密度。但在这种情况下,每个变量都是一个带,密度显示为沿条形的渐变。
希望我不需要手动绘制条形作为填充形状。
想象一下,如果不是小提琴图或箱线图,而是带有代表密度的梯度的条形图。
library(tidyverse)
library(ggplot)
df = data.frame(
A = 2.3 + 7*rnorm(100),
B = 0 + 5*rnorm(100),
C = 4 + 2*rnorm(100)
)
df %>%
gather() %>%
ggplot(aes(x=key, y=value)) +
geom_violin(scale="width", fill='red', alpha=0.5) +
geom_boxplot(fill='green', alpha=0.5)
所以这是我从你的问题中得到的最接近的近似值:
# Dummy data
df <- data.frame(
y = c(rnorm(100, 4), rnorm(100, 12)),
x = rep(c(1, 2), each = 100)
)
ggplot(df, aes(x, y, group = x)) +
# To fill gap between 0 and actual data
stat_summary(geom = "rect",
fun.ymin = function(x){0},
fun.ymax = min,
aes(xmin = x - 0.4, xmax = x + 0.4, fill = 0)) +
# To make the density part
stat_ydensity(aes(fill = stat(density),
xmin = x - 0.4, xmax = x + 0.4,
# Nudge y by a bit depending on the spread of your data
ymin = stat(y) - 0.01, ymax = stat(y) + 0.01),
geom = "rect", trim = FALSE)
符合要求吗?
我想像在箱线图、小提琴图或蜂群中那样表示多个变量的密度。但在这种情况下,每个变量都是一个带,密度显示为沿条形的渐变。
希望我不需要手动绘制条形作为填充形状。
想象一下,如果不是小提琴图或箱线图,而是带有代表密度的梯度的条形图。
library(tidyverse)
library(ggplot)
df = data.frame(
A = 2.3 + 7*rnorm(100),
B = 0 + 5*rnorm(100),
C = 4 + 2*rnorm(100)
)
df %>%
gather() %>%
ggplot(aes(x=key, y=value)) +
geom_violin(scale="width", fill='red', alpha=0.5) +
geom_boxplot(fill='green', alpha=0.5)
所以这是我从你的问题中得到的最接近的近似值:
# Dummy data
df <- data.frame(
y = c(rnorm(100, 4), rnorm(100, 12)),
x = rep(c(1, 2), each = 100)
)
ggplot(df, aes(x, y, group = x)) +
# To fill gap between 0 and actual data
stat_summary(geom = "rect",
fun.ymin = function(x){0},
fun.ymax = min,
aes(xmin = x - 0.4, xmax = x + 0.4, fill = 0)) +
# To make the density part
stat_ydensity(aes(fill = stat(density),
xmin = x - 0.4, xmax = x + 0.4,
# Nudge y by a bit depending on the spread of your data
ymin = stat(y) - 0.01, ymax = stat(y) + 0.01),
geom = "rect", trim = FALSE)
符合要求吗?