在ggplot中调整geom_bar(position ="dodge") [英] Adjusting geom_bar (position="dodge") in ggplot

问题描述

我想在ggplot中创建一个2变量条形图，其中一种度量部分隐藏在另一种度量之后.我可以使用Series Overlap在Excel中完成此操作，并获得此结果.

I want to create a 2 variable bar chart in ggplot where one measure is partially hidden behind the other. I can do it in Excel using Series Overlap and get this result.

使用geom_bar(position ="dodge")将两个条并排放置.有办法完全调整吗?

Using the geom_bar (position="dodge") places the two bars side by side. Is there a way to adjust this at all?

一些代码:

library (ggplot2)
library(reshape2)
x <- c(19, 18, 21, 19)
y <- c(17, 16, 18, 19)
z <- c("a", "b", "c", "d")

df <- melt (data.frame (x,y,z))

ggplot (df, aes(x=z, y=value, fill=variable)) + geom_bar (stat="identity", position ="dodge")

推荐答案

您可以通过指定position = position_dodge(...)来自定义躲避.

You can customise the dodging by specifying position = position_dodge(...).

ggplot (df, aes(x=z, y=value, fill=variable)) + 
  geom_bar (stat="identity", position = position_dodge(width = 0.5))

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