geom_text适用于R中的直方图吗？ [英] geom_text works for histogram in R?

问题描述

想知道 geom_text 是否适用于 hist ？试过下面的代码，它似乎没有效果。当为每个柱状图桶绘制每个柱时，我只想显示标签（属于特定柱状图桶的元素数量）。任何解决方案，赞赏。谢谢。

  p < -  hist（df $ foo，
 main =title，xlab =foo ）
p + geom_text（）
  

编辑1 ，尝试过 geom_bar ，这里是我的代码，它看起来不太好，因为我期望每个栏上都标有一个数字。在图中，它只显示2.5,5,7.5和10，我预计会显示1,2,3，...，9,10每个栏。

 g < -  ggplot（df，aes（df $ foo））
g + geom_bar（）
  

问候，
Lin

解决方案

由于没有人回答过这个问题，所以我会试一试：

首先，一些提示：

• 发布您的数据将使人们更有可能回答（因此我们不必复制它）
  
• 自己做一些研究会有很长的路要走。例如，你提到你想为每个酒吧添加一个标签 - 很好，有几种方法可以做到这一点。快速谷歌搜索挖掘这个：
  
  
  

  至你关于 .. count的问题。 。请参阅： ggplot中的特殊变量（..count ..，..density ..等）。
  

  Wondering if geom_text works for hist? Tried following code and it seems no effect. I just want to show label (the number of elements belonging to a specific histogram bucket), when plotting each bar for each histogram bucket. Any solutions are appreciated. Thanks.

  p <- hist(df$foo,
            main="title",xlab="foo")
  p + geom_text()
  

  Edit 1, tried geom_bar, here is my code and it seems not working well, since I expect a number labelled on each bar. In the diagram, it only shows 2.5, 5, 7.5 and 10, I expect to show 1, 2, 3, ..., 9, 10 for each bar.

  g <- ggplot(df, aes(df$foo))
  g + geom_bar()
  

  regards, Lin

  解决方案

  Since no one has answered this I'll give it a try:

  First, a few tips:

  • posting your data will make it more likely for people to answer (so we don't have to replicate it)
  • Doing some research on your own goes a long way. For example, you mention that you want a label for each bar - fine there are several ways to do it. A quick google search digs up this: Customize axis labels

  Now to actually answer your question:

  set.seed(1)
  #Make sample data since none is provided
  df <- data.frame(foo=sample(1:10,200,replace=T))
  
  #This is what you want - use as.factor(foo) - this gives you the breaks at every bar.
  g <- ggplot(df, aes(as.factor(foo)))
  
  #Actually making the barplot and adding labels to it
  g + geom_bar() +stat_count(aes(y=..count..,label=..count..),geom="text",vjust=-1)
  

  To your question about ..count.. see: Special variables in ggplot (..count.., ..density.., etc.).

  这篇关于geom_text适用于R中的直方图吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！