如何使用ggplot2将频率计数标签添加到条形图中的条形图？ [英] How to add frequency count labels to the bars in a bar graph using ggplot2?

问题描述

我想绘制[r]因子变量的频率分布作为条形图，其中条形图表示因子水平的频率计数。我使用ggplot2来做到这一点，并没有任何问题。

我无法弄清楚如何在条形图中为条形图添加频率计数标签。我试过的语法如下：

  ggplot（data，aes（x = factorvar））+ geom_bar（fill =somecolor）+ geom_text（aes（y = ???））
  

在由W.Chang编写的stackoverflow和R Graphics Cookbook中搜索，但是我无法找到任何具体的答案，我应该在上面的geom_text（）的美学中匹配y的参数。我尝试了一些变体，如：（y = ..count ..），但它没有奏效。

我很感激任何帮助。谢谢...

解决方案

ggplot（data = diamonds，aes（x = clarity） ）+
geom_bar（）+
geom_text（stat ='count'，aes（label = .. count ..），vjust = -1）


I want to plot frequency distribution of an [r] factor variable as a bargraph, where bars represent the frequency counts of the factor levels. I use ggplot2 to do that and there's no problem with that.

What I can't figure out is how to add frequency count labels to the bars in the bargraph. The syntax that I've tried is as follows:

ggplot(data, aes(x = factorvar)) + geom_bar(fill = "somecolor") + geom_text(aes(y = ???))

I think I thoroughly searched in stackoverflow and "R Graphics Cookbook" by W.Chang but I couldn't find any specific answer to what parameter should I match to "y" in the aesthetics of geom_text() above. I tried some variants like: (y = ..count..) but it didn't work.

I would appreciate any help. Thanks...

解决方案

ggplot(data=diamonds, aes(x=clarity)) +
geom_bar() +
geom_text(stat='count', aes(label=..count..), vjust=-1)

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