[英]Plot a ggplot geom_boxplot with geom_jitter, separated by a factor and showing only box median
I have a data.frame
with two factor
variables ( type
and age
in df
below) and a single numeric variable ( value
in df
below):我有一个带有两个factor
变量(下面df
中的type
和age
)和一个数字变量(下面df
中的value
)的data.frame
:
set.seed(1)
df <- data.frame(type = c(rep("t1", 8), rep("t2", 8), rep("t3", 8), rep("t4", 8), rep("t5", 8), rep("t6", 8)),
age = rep(c(rep("y", 4),rep("o", 4)), 6),
value = rep(c(runif(4, 5, 10), runif(4, 7.5, 12.5)), 6),
stringsAsFactors = F)
df$type <- factor(df$type, levels = c("t1", "t2", "t3", "t4", "t5", "t6"), ordered = T)
df$age <- factor(df$age, levels = c("y", "o"), ordered = T)
I want to use R
's ggplot2
to plot df$value
as jittered points, grouped and color-coded by df$type
, but within df$type
separated by df$age
.我想使用R
的ggplot2
将df$value
绘制为抖动点,按df$type
分组和颜色编码,但在df$type
内由df$age
分隔。 In addition, I want to show the median line for each group of df$type
and df$age
.此外,我想显示每组df$type
和df$age
的中线。
So far I can only get the points plotted without the median lines:到目前为止,我只能得到没有中线的点:
library(ggplot2)
ggplot(df, aes(x = age, y = value, color = type)) +
geom_jitter(width = 0.3) +
facet_wrap(~type,nrow = 1) + theme_minimal()
Any idea how to add the median lines?知道如何添加中线吗?
Your example data was the same for all types, so I changed it a bit:您的示例数据对于所有类型都是相同的,所以我对其进行了一些更改:
set.seed(1)
df <- data.frame(type = c(rep("t1", 8), rep("t2", 8), rep("t3", 8), rep("t4", 8), rep("t5", 8), rep("t6", 8)),
age = rep(c(rep("y", 4),rep("o", 4)), 6),
value = runif(48, 5, 10),
stringsAsFactors = F)
df$type <- factor(df$type, levels = c("t1", "t2", "t3", "t4", "t5", "t6"), ordered = T)
df$age <- factor(df$age, levels = c("y", "o"), ordered = T)
You can use stat_summary
for this:您可以为此使用stat_summary
:
ggplot(df) +
geom_jitter(aes(x = age,
y = value,
color = type,
group = age),
width = 0.2) +
stat_summary(aes(x = age,
y = value,
color = type,
group = interaction(age, type)),
fun = median,
geom = "crossbar") +
scale_color_brewer(palette = "Dark2") +
facet_wrap(~type,nrow = 1) +
theme_bw()
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