title: In ggplot2 , how to align label x text in vertical
body: <p>In ggplot2 , how to align label x in vertical ?  The wished result as attached image .</p>
  <pre><code>library(tidyverse)
  category &lt;- c(&quot;A B C&quot;,&quot;DF GC&quot;,&quot;S AA&quot;)
  amount &lt;- c(3,2,1)
  
  plot_data &lt;- data.frame(category,amount)
  
  plot_data %&gt;% ggplot(aes(x=category,y=amount))+geom_col()
  </code></pre>
  <p><a href="https://i.stack.imgur.com/je2Us.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/je2Us.png" alt="enter image description here" /></a></p>