title: R: Boxplot - how to move the x-axis label down?
body: <pre><code>#RGR ~ Treatment:Geno boxplot
  fit &lt;- aov(Total.RGR~Treatment:Geno, data=For.R)
  summary(fit)
  t &lt;- TukeyHSD(fit)
  t
  boxplot(Total.RGR~Treatment:Geno, 
  data=For.R,las=2,ylim=c(-20,100),xlab=&quot;Treatment:Geno&quot;,ylab=&quot;RGR (mg/day)&quot;)
  text(1:8, 95 ,c(&quot;a&quot;,&quot;ac&quot;,&quot;a&quot;,&quot;a&quot;,&quot;a&quot;,&quot;bd&quot;,&quot;bcd&quot;,&quot;ad&quot;))
  </code></pre>
  <p>Is my code, it does the job, but when I rotate my x-axis labels the obstruct the x-axis title.
  Does any of you know of a way to move the title down?</p>
  <p><a href="https://i.stack.imgur.com/ZHbEg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZHbEg.png" alt="Image" /></a></p>
  
  <p>It must be easy but I cant find anything in the reference.</p>
  <p>Thanks.
  Mathias</p>