有冗余级别时，如何在R的ggplot2中保持宽度恒定的条形图? [英] How do I keep a constant width bar chart in R's ggplot2 when there are redundant levels?

问题描述

考虑一些没有发生水平的样本数据:

Consider some sample data where a level does not occur:

dat <- data.frame(sex = c("F","M","F"),
                  status = c("Pregnant","Not pregnant","Not pregnant"),
                  frequency = c(25,100,75))

在样本数据中，男性无法怀孕，因此他们没有数据.

In the sample data males cannot become pregnant so they have no data.

我想使用以下代码在R中的ggplot2中绘制数据:

I would like to plot the data using ggplot2 in R using this code:

library(ggplot2)

p <- ggplot(dat,aes(x=status,y=frequency,fill=sex))+
  geom_bar(stat = "identity",position="dodge")

print(p)

我得到以下输出:

如您所见，女性和孕妇的条形图比其他条形图宽.我的问题是如何抑制条形加宽以使条形具有相同的宽度?

As you can see, the bar for female and pregnant is wider than the other bars. My question is how can I suppress the bar widening to have the bars the same width?

推荐答案

#默认情况下，闪避保留总宽度.您可以选择

# By default, dodging preserves the total width. You can choose

#保留每个元素的宽度:

# to preserve the width of each element:

ggplot(mtcars, aes(factor(cyl), fill = factor(vs))) +
  geom_bar(position = position_dodge(preserve = "single"))

来自position_dodge的文档: http://ggplot2.tidyverse.org/reference/position_dodge.html

但是我特别喜欢这个解决方案: https://stackoverflow.com/a/38103511/3330437

But I particularly like this solution: https://stackoverflow.com/a/38103511/3330437

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